10121000120100 has 72 divisors (see below), whose sum is σ = 32537141135520. Its totient is φ = 2698933364640.

The previous prime is 10121000120087. The next prime is 10121000120111. The reversal of 10121000120100 is 102100012101.

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, 1874256582 + ... + 1874261981.

Almost surely, 2^{10121000120100} is an apocalyptic number.

10121000120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121000120100 is an abundant number, since it is smaller than the sum of its proper divisors (22416141015420).

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

10121000120100 is a wasteful number, since it uses less digits than its factorization.

10121000120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748518586 (or 3748518573 counting only the distinct ones).

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

Adding to 10121000120100 its reverse (102100012101), we get a palindrome (10223100132201).

The spelling of 10121000120100 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty thousand, one hundred".