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10221021012 = 2234395473547
BaseRepresentation
bin10011000010011100…
…00110011101010100
3222101022122122221210
421201032012131110
5131413040133022
64410115541420
7511200150036
oct114116063524
928338578853
1010221021012
114375555404
121b92bba870
13c6b724837
146cd657c56
153ec4baa0c
hex261386754

10221021012 has 48 divisors (see below), whose sum is σ = 23953825280. Its totient is φ = 3392075232.

The previous prime is 10221021011. The next prime is 10221021043. The reversal of 10221021012 is 21012012201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221021011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2879823 + ... + 2883369.

Almost surely, 210221021012 is an apocalyptic number.

10221021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10221021012 is an abundant number, since it is smaller than the sum of its proper divisors (13732804268).

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

10221021012 is a wasteful number, since it uses less digits than its factorization.

10221021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540 (or 4538 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10221021012 its reverse (21012012201), we get a palindrome (31233033213).

The spelling of 10221021012 in words is "ten billion, two hundred twenty-one million, twenty-one thousand, twelve".

Divisors: 1 2 3 4 6 12 439 547 878 1094 1317 1641 1756 2188 2634 3282 3547 5268 6564 7094 10641 14188 21282 42564 240133 480266 720399 960532 1440798 1557133 1940209 2881596 3114266 3880418 4671399 5820627 6228532 7760836 9342798 11641254 18685596 23282508 851751751 1703503502 2555255253 3407007004 5110510506 10221021012