121121202211122 has 64 divisors (see below), whose sum is σ = 250130744515584. Its totient is φ = 39071017621440.

The previous prime is 121121202211117. The next prime is 121121202211129. The reversal of 121121202211122 is 221112202121121.

It is not an unprimeable number, because it can be changed into a prime (121121202211129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71439313 + ... + 73115099.

It is an arithmetic number, because the mean of its divisors is an integer number (3908292883056).

Almost surely, 2^{121121202211122} is an apocalyptic number.

121121202211122 is an abundant number, since it is smaller than the sum of its proper divisors (129009542304462).

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

121121202211122 is a wasteful number, since it uses less digits than its factorization.

121121202211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677583.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121121202211122 its reverse (221112202121121), we get a palindrome (342233404332243).

Subtracting 121121202211122 from its reverse (221112202121121), we obtain a palindrome (99990999909999).

The spelling of 121121202211122 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred two million, two hundred eleven thousand, one hundred twenty-two".