121000022110100 has 72 divisors (see below), whose sum is σ = 300101296954368. Its totient is φ = 41482785168000.

The previous prime is 121000022110091. The next prime is 121000022110103. The reversal of 121000022110100 is 1011220000121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000022110103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3789050 + ... + 16011150.

Almost surely, 2^{121000022110100} is an apocalyptic number.

121000022110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000022110100 is an abundant number, since it is smaller than the sum of its proper divisors (179101274844268).

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

121000022110100 is a wasteful number, since it uses less digits than its factorization.

121000022110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236265 (or 12236258 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121000022110100 its reverse (1011220000121), we get a palindrome (122011242110221).

The spelling of 121000022110100 in words is "one hundred twenty-one trillion, twenty-two million, one hundred ten thousand, one hundred".