121212102112100 has 36 divisors (see below), whose sum is σ = 263724272910000. Its totient is φ = 48356912489760.

The previous prime is 121212102112093. The next prime is 121212102112181. The reversal of 121212102112100 is 1211201212121.

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, 1599066350 + ... + 1599142149.

It is an arithmetic number, because the mean of its divisors is an integer number (7325674247500).

Almost surely, 2^{121212102112100} is an apocalyptic number.

121212102112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212102112100 is an abundant number, since it is smaller than the sum of its proper divisors (142512170797900).

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

121212102112100 is a wasteful number, since it uses less digits than its factorization.

121212102112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198208892 (or 3198208885 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121212102112100 its reverse (1211201212121), we get a palindrome (122423303324221).

The spelling of 121212102112100 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred two million, one hundred twelve thousand, one hundred".