222121222212010 has 64 divisors (see below), whose sum is σ = 437304261836160. Its totient is φ = 80560501908480.

The previous prime is 222121222211957. The next prime is 222121222212011. The reversal of 222121222212010 is 10212222121222.

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

It is not an unprimeable number, because it can be changed into a prime (222121222212011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272817789 + ... + 273630751.

It is an arithmetic number, because the mean of its divisors is an integer number (6832879091190).

Almost surely, 2^{222121222212010} is an apocalyptic number.

222121222212010 is a deficient number, since it is larger than the sum of its proper divisors (215183039624150).

222121222212010 is a wasteful number, since it uses less digits than its factorization.

222121222212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819463.

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

Adding to 222121222212010 its reverse (10212222121222), we get a palindrome (232333444333232).

The spelling of 222121222212010 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, ten".