10121012100 has 72 divisors (see below), whose sum is σ = 32537188320. Its totient is φ = 2698935840.

The previous prime is 10121012071. The next prime is 10121012113. The reversal of 10121012100 is 121012101.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1871562 + ... + 1876961.

Almost surely, 2^10121012100 is an apocalyptic number.

10121012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121012100 is an abundant number, since it is smaller than the sum of its proper divisors (22416176220).

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

10121012100 is a wasteful number, since it uses less digits than its factorization.

10121012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748546 (or 3748533 counting only the distinct ones).

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

Adding to 10121012100 its reverse (121012101), we get a palindrome (10242024201).

Subtracting from 10121012100 its reverse (121012101), we obtain a palindrome (9999999999).

The spelling of 10121012100 in words is "ten billion, one hundred twenty-one million, twelve thousand, one hundred".