121211220220122 has 32 divisors (see below), whose sum is σ = 249301309982400. Its totient is φ = 39272650786688.

The previous prime is 121211220220117. The next prime is 121211220220193. The reversal of 121211220220122 is 221022022112121.

It is a super-2 number, since 2×121211220220122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1923589713 + ... + 1923652724.

It is an arithmetic number, because the mean of its divisors is an integer number (7790665936950).

Almost surely, 2^{121211220220122} is an apocalyptic number.

121211220220122 is an abundant number, since it is smaller than the sum of its proper divisors (128090089762278).

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

121211220220122 is a wasteful number, since it uses less digits than its factorization.

121211220220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847242590.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121211220220122 its reverse (221022022112121), we get a palindrome (342233242332243).

The spelling of 121211220220122 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty thousand, one hundred twenty-two".