221022000222121 has 24 divisors (see below), whose sum is σ = 268457071982400. Its totient is φ = 178218512078592.

The previous prime is 221022000222103. The next prime is 221022000222209. The reversal of 221022000222121 is 121222000220122.

221022000222121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221022000222121 - 2³³ = 221013410287529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221022000223121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21779110 + ... + 30271663.

It is an arithmetic number, because the mean of its divisors is an integer number (11185711332600).

Almost surely, 2^{221022000222121} is an apocalyptic number.

It is an amenable number.

221022000222121 is a deficient number, since it is larger than the sum of its proper divisors (47435071760279).

221022000222121 is a wasteful number, since it uses less digits than its factorization.

221022000222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52052913 (or 52052896 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221022000222121 its reverse (121222000220122), we get a palindrome (342244000442243).

The spelling of 221022000222121 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty-two thousand, one hundred twenty-one".