20221222220121 has 16 divisors (see below), whose sum is σ = 29041540375680. Its totient is φ = 12441283670400.

The previous prime is 20221222220093. The next prime is 20221222220191. The reversal of 20221222220121 is 12102222212202.

It is not a de Polignac number, because 20221222220121 - 2¹⁰ = 20221222219097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221222220191) 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, 52835805 + ... + 53217146.

It is an arithmetic number, because the mean of its divisors is an integer number (1815096273480).

Almost surely, 2^{20221222220121} is an apocalyptic number.

It is an amenable number.

20221222220121 is a deficient number, since it is larger than the sum of its proper divisors (8820318155559).

20221222220121 is a wasteful number, since it uses less digits than its factorization.

20221222220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106057856.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20221222220121 its reverse (12102222212202), we get a palindrome (32323444432323).

The spelling of 20221222220121 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".