122210212112121 has 16 divisors (see below), whose sum is σ = 191258195533184. Its totient is φ = 67946990517504.

The previous prime is 122210212112099. The next prime is 122210212112123. The reversal of 122210212112121 is 121211212012221.

It is not a de Polignac number, because 122210212112121 - 2⁹ = 122210212111609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122210212112123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78642349360 + ... + 78642350913.

It is an arithmetic number, because the mean of its divisors is an integer number (11953637220824).

Almost surely, 2^{122210212112121} is an apocalyptic number.

It is an amenable number.

122210212112121 is a deficient number, since it is larger than the sum of its proper divisors (69047983421063).

122210212112121 is a wasteful number, since it uses less digits than its factorization.

122210212112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157284700320.

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

Adding to 122210212112121 its reverse (121211212012221), we get a palindrome (243421424124342).

The spelling of 122210212112121 in words is "one hundred twenty-two trillion, two hundred ten billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".