10402121112 has 32 divisors (see below), whose sum is σ = 26059622400. Its totient is φ = 3460131104.

The previous prime is 10402121089. The next prime is 10402121117. The reversal of 10402121112 is 21112120401.

It is a super-2 number, since 2×10402121112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10402121091 and 10402121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440928 + ... + 463919.

It is an arithmetic number, because the mean of its divisors is an integer number (814363200).

Almost surely, 2^10402121112 is an apocalyptic number.

10402121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10402121112 is an abundant number, since it is smaller than the sum of its proper divisors (15657501288).

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

10402121112 is a wasteful number, since it uses less digits than its factorization.

10402121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905335 (or 905331 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10402121112 its reverse (21112120401), we get a palindrome (31514241513).

The spelling of 10402121112 in words is "ten billion, four hundred two million, one hundred twenty-one thousand, one hundred twelve".