222121021022210 has 128 divisors (see below), whose sum is σ = 418628216952000. Its totient is φ = 84749108871168.

The previous prime is 222121021022203. The next prime is 222121021022221. The reversal of 222121021022210 is 12220120121222.

It can be written as a sum of positive squares in 32 ways, for example, as 4499841566089 + 217621179456121 = 2121283^2 + 14751989^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29268809096 + ... + 29268816684.

Almost surely, 2^{222121021022210} is an apocalyptic number.

222121021022210 is a deficient number, since it is larger than the sum of its proper divisors (196507195929790).

222121021022210 is a wasteful number, since it uses less digits than its factorization.

222121021022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11208.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222121021022210 its reverse (12220120121222), we get a palindrome (234341141143432).

The spelling of 222121021022210 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twenty-one million, twenty-two thousand, two hundred ten".