12220212111121 has 16 divisors (see below), whose sum is σ = 13990244843520. Its totient is φ = 10456255434240.

The previous prime is 12220212111119. The next prime is 12220212111157. The reversal of 12220212111121 is 12111121202221.

It is a happy number.

It is not a de Polignac number, because 12220212111121 - 2¹ = 12220212111119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220212111161) 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, 37364976 + ... + 37690606.

It is an arithmetic number, because the mean of its divisors is an integer number (874390302720).

Almost surely, 2^{12220212111121} is an apocalyptic number.

It is an amenable number.

12220212111121 is a deficient number, since it is larger than the sum of its proper divisors (1770032732399).

12220212111121 is an equidigital number, since it uses as much as digits as its factorization.

12220212111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334944.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12220212111121 its reverse (12111121202221), we get a palindrome (24331333313342).

The spelling of 12220212111121 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-one".