121113231020100 has 108 divisors (see below), whose sum is σ = 414133848164400. Its totient is φ = 29360783275200.

The previous prime is 121113231020099. The next prime is 121113231020143. The reversal of 121113231020100 is 1020132311121.

121113231020100 is a `hidden beast` number, since 1 + 21 + 1 + 132 + 310 + 201 + 0 + 0 = 666.

It is a super-2 number, since 2×121113231020100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6116819950 + ... + 6116839749.

Almost surely, 2^{121113231020100} is an apocalyptic number.

121113231020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121113231020100 is an abundant number, since it is smaller than the sum of its proper divisors (293020617144300).

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

121113231020100 is a wasteful number, since it uses less digits than its factorization.

121113231020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12233659730 (or 12233659720 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121113231020100 its reverse (1020132311121), we get a palindrome (122133363331221).

The spelling of 121113231020100 in words is "one hundred twenty-one trillion, one hundred thirteen billion, two hundred thirty-one million, twenty thousand, one hundred".