121755370100 has 72 divisors (see below), whose sum is σ = 325180520448. Its totient is φ = 38533564800.

The previous prime is 121755370069. The next prime is 121755370103. The reversal of 121755370100 is 1073557121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121755370103) 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, 6680756 + ... + 6698955.

Almost surely, 2^121755370100 is an apocalyptic number.

121755370100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121755370100 is an abundant number, since it is smaller than the sum of its proper divisors (203425150348).

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

121755370100 is a wasteful number, since it uses less digits than its factorization.

121755370100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13379745 (or 13379738 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 32.

The spelling of 121755370100 in words is "one hundred twenty-one billion, seven hundred fifty-five million, three hundred seventy thousand, one hundred".