121202210212100 has 72 divisors (see below), whose sum is σ = 263822634166560. Its totient is φ = 48330984199680.

The previous prime is 121202210212091. The next prime is 121202210212103. The reversal of 121202210212100 is 1212012202121.

It is not an unprimeable number, because it can be changed into a prime (121202210212103) 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, 82767884 + ... + 84219516.

Almost surely, 2^{121202210212100} is an apocalyptic number.

121202210212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202210212100 is an abundant number, since it is smaller than the sum of its proper divisors (142620423954460).

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

121202210212100 is a wasteful number, since it uses less digits than its factorization.

121202210212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454229 (or 1454222 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121202210212100 its reverse (1212012202121), we get a palindrome (122414222414221).

The spelling of 121202210212100 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred ten million, two hundred twelve thousand, one hundred".