121202110012100 has 36 divisors (see below), whose sum is σ = 283240007862084. Its totient is φ = 44751548311680.

The previous prime is 121202110012013. The next prime is 121202110012111. The reversal of 121202110012100 is 1210011202121.

It can be written as a sum of positive squares in 6 ways, for example, as 24933084836416 + 96269025175684 = 4993304^2 + 9811678^2 .

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, 46616194859 + ... + 46616197458.

It is an arithmetic number, because the mean of its divisors is an integer number (7867777996169).

Almost surely, 2^{121202110012100} is an apocalyptic number.

121202110012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202110012100 is an abundant number, since it is smaller than the sum of its proper divisors (162037897849984).

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

121202110012100 is a wasteful number, since it uses less digits than its factorization.

121202110012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93232392344 (or 93232392337 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121202110012100 its reverse (1210011202121), we get a palindrome (122412121214221).

The spelling of 121202110012100 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred ten million, twelve thousand, one hundred".