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10231222020 = 22352331311769
BaseRepresentation
bin10011000011101010…
…00000111100000100
3222102000211221002220
421201311000330010
5131423143101040
64411122332340
7511352644425
oct114165007404
928360757086
1010231222020
114380292598
121b964ba0b0
13c70886a36
146d0b5164c
153ed3332d0
hex261d40f04

10231222020 has 192 divisors, whose sum is σ = 30996725760. Its totient is φ = 2514124800.

The previous prime is 10231222003. The next prime is 10231222021. The reversal of 10231222020 is 2022213201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (10231222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13304196 + ... + 13304964.

It is an arithmetic number, because the mean of its divisors is an integer number (161441280).

Almost surely, 210231222020 is an apocalyptic number.

10231222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10231222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15498362880).

10231222020 is an abundant number, since it is smaller than the sum of its proper divisors (20765503740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10231222020 is a wasteful number, since it uses less digits than its factorization.

10231222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 10231222020 its reverse (2022213201), we get a palindrome (12253435221).

The spelling of 10231222020 in words is "ten billion, two hundred thirty-one million, two hundred twenty-two thousand, twenty".