121211201220122 has 64 divisors (see below), whose sum is σ = 200849510400000. Its totient is φ = 54508194675648.

The previous prime is 121211201220107. The next prime is 121211201220127. The reversal of 121211201220122 is 221022102112121.

It is a junction number, because it is equal to n+sod(n) for n = 121211201220094 and 121211201220103.

It is not an unprimeable number, because it can be changed into a prime (121211201220127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1249049279 + ... + 1249146317.

It is an arithmetic number, because the mean of its divisors is an integer number (3138273600000).

Almost surely, 2^{121211201220122} is an apocalyptic number.

121211201220122 is a deficient number, since it is larger than the sum of its proper divisors (79638309179878).

121211201220122 is a wasteful number, since it uses less digits than its factorization.

121211201220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99835.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121211201220122 its reverse (221022102112121), we get a palindrome (342233303332243).

The spelling of 121211201220122 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred one million, two hundred twenty thousand, one hundred twenty-two".