220012221021121 has 16 divisors (see below), whose sum is σ = 231678687686400. Its totient is φ = 208354450756608.

The previous prime is 220012221021011. The next prime is 220012221021137. The reversal of 220012221021121 is 121120122210022.

It is not a de Polignac number, because 220012221021121 - 2⁷ = 220012221020993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220012221021191) 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 15 ways as a sum of consecutive naturals, for example, 976994280 + ... + 977219446.

It is an arithmetic number, because the mean of its divisors is an integer number (14479917980400).

Almost surely, 2^{220012221021121} is an apocalyptic number.

It is an amenable number.

220012221021121 is a deficient number, since it is larger than the sum of its proper divisors (11666466665279).

220012221021121 is a wasteful number, since it uses less digits than its factorization.

220012221021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244248.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220012221021121 its reverse (121120122210022), we get a palindrome (341132343231143).

The spelling of 220012221021121 in words is "two hundred twenty trillion, twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty-one".