121102201022100 has 36 divisors (see below), whose sum is σ = 350389034958144. Its totient is φ = 32293920272480.

The previous prime is 121102201022059. The next prime is 121102201022167. The reversal of 121102201022100 is 1220102201121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121102201022100.

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, 201837001404 + ... + 201837002003.

Almost surely, 2^{121102201022100} is an apocalyptic number.

121102201022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102201022100 is an abundant number, since it is smaller than the sum of its proper divisors (229286833936044).

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

121102201022100 is a wasteful number, since it uses less digits than its factorization.

121102201022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403674003424 (or 403674003417 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121102201022100 its reverse (1220102201121), we get a palindrome (122322303223221).

The spelling of 121102201022100 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred one million, twenty-two thousand, one hundred".