10010121012 has 36 divisors (see below), whose sum is σ = 25732237440. Its totient is φ = 3280151952.

The previous prime is 10010120963. The next prime is 10010121029. The reversal of 10010121012 is 21012101001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10010120985 and 10010121003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2354308 + ... + 2358555.

Almost surely, 2^10010121012 is an apocalyptic number.

10010121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10010121012 is an abundant number, since it is smaller than the sum of its proper divisors (15722116428).

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

10010121012 is a wasteful number, since it uses less digits than its factorization.

10010121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712932 (or 4712927 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10010121012 its reverse (21012101001), we get a palindrome (31022222013).

The spelling of 10010121012 in words is "ten billion, ten million, one hundred twenty-one thousand, twelve".