222220121212210 has 32 divisors (see below), whose sum is σ = 436443282172800. Its totient is φ = 80791803576960.

The previous prime is 222220121212207. The next prime is 222220121212273. The reversal of 222220121212210 is 12212121022222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193339750 + ... + 194485729.

It is an arithmetic number, because the mean of its divisors is an integer number (13638852567900).

Almost surely, 2^{222220121212210} is an apocalyptic number.

222220121212210 is a deficient number, since it is larger than the sum of its proper divisors (214223160960590).

222220121212210 is a wasteful number, since it uses less digits than its factorization.

222220121212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387830706.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222220121212210 its reverse (12212121022222), we get a palindrome (234432242234432).

The spelling of 222220121212210 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred ten".