121202100212122 has 16 divisors (see below), whose sum is σ = 187314672591720. Its totient is φ = 58789570757632.

The previous prime is 121202100212113. The next prime is 121202100212153. The reversal of 121202100212122 is 221212001202121.

It can be written as a sum of positive squares in 4 ways, for example, as 103271101493121 + 17930998719001 = 10162239^2 + 4234501^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121202100212122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6423676183 + ... + 6423695050.

Almost surely, 2^{121202100212122} is an apocalyptic number.

121202100212122 is a deficient number, since it is larger than the sum of its proper divisors (66112572379598).

121202100212122 is a wasteful number, since it uses less digits than its factorization.

121202100212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12847371377.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121202100212122 its reverse (221212001202121), we get a palindrome (342414101414243).

The spelling of 121202100212122 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred million, two hundred twelve thousand, one hundred twenty-two".