121202112201100 has 144 divisors (see below), whose sum is σ = 322858474624000. Its totient is φ = 39367903901760.

The previous prime is 121202112201019. The next prime is 121202112201133. The reversal of 121202112201100 is 1102211202121.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92337492 + ... + 93640891.

Almost surely, 2^{121202112201100} is an apocalyptic number.

121202112201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202112201100 is an abundant number, since it is smaller than the sum of its proper divisors (201656362422900).

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

121202112201100 is a wasteful number, since it uses less digits than its factorization.

121202112201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185978437 (or 185978416 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121202112201100 its reverse (1102211202121), we get a palindrome (122304323403221).

The spelling of 121202112201100 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred twelve million, two hundred one thousand, one hundred".