220222220121 has 40 divisors (see below), whose sum is σ = 335457929664. Its totient is φ = 143949376800.

The previous prime is 220222220107. The next prime is 220222220161. The reversal of 220222220121 is 121022222022.

220222220121 is a `hidden beast` number, since 220 + 2 + 222 + 201 + 21 = 666.

It is not a de Polignac number, because 220222220121 - 2¹³ = 220222211929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220222220094 and 220222220103.

It is not an unprimeable number, because it can be changed into a prime (220222220161) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 711970 + ... + 973316.

Almost surely, 2^220222220121 is an apocalyptic number.

It is an amenable number.

220222220121 is a deficient number, since it is larger than the sum of its proper divisors (115235709543).

220222220121 is a wasteful number, since it uses less digits than its factorization.

220222220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261563 (or 261554 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220222220121 its reverse (121022222022), we get a palindrome (341244442143).

The spelling of 220222220121 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".