121210122122 has 16 divisors (see below), whose sum is σ = 186360708744. Its totient is φ = 59126821600.

The previous prime is 121210122101. The next prime is 121210122127. The reversal of 121210122122 is 221221012121.

It can be written as a sum of positive squares in 4 ways, for example, as 3349052641 + 117861069481 = 57871^2 + 343309^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121210122122.

It is not an unprimeable number, because it can be changed into a prime (121210122127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301829 + ... + 577512.

Almost surely, 2^121210122122 is an apocalyptic number.

121210122122 is a deficient number, since it is larger than the sum of its proper divisors (65150586622).

121210122122 is an frugal number, since it uses more digits than its factorization.

121210122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879466 (or 879384 counting only the distinct ones).

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

Adding to 121210122122 its reverse (221221012121), we get a palindrome (342431134243).

The spelling of 121210122122 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one hundred twenty-two".