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20012210023 = 137121681701
BaseRepresentation
bin10010101000110100…
…100001011101100111
31220122200111121020211
4102220310201131213
5311441111210043
613105443040251
71305630656431
oct225064413547
956580447224
1020012210023
11853a409653
123a66070087
131b6c0913c0
14d7bb83651
157c1d7da9d
hex4a8d21767

20012210023 has 8 divisors (see below), whose sum is σ = 21855155616. Its totient is φ = 18212628000.

The previous prime is 20012210021. The next prime is 20012210051. The reversal of 20012210023 is 32001221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012210023 - 21 = 20012210021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012209985 and 20012210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012210021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10839928 + ... + 10841773.

It is an arithmetic number, because the mean of its divisors is an integer number (2731894452).

Almost surely, 220012210023 is an apocalyptic number.

20012210023 is a deficient number, since it is larger than the sum of its proper divisors (1842945593).

20012210023 is a wasteful number, since it uses less digits than its factorization.

20012210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21681785.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20012210023 its reverse (32001221002), we get a palindrome (52013431025).

It can be divided in two parts, 2001221002 and 3, that multiplied together give a palindrome (6003663006).

The spelling of 20012210023 in words is "twenty billion, twelve million, two hundred ten thousand, twenty-three".

Divisors: 1 13 71 923 21681701 281862113 1539400771 20012210023