222101111221002 has 24 divisors (see below), whose sum is σ = 518235926182884. Its totient is φ = 68338803452544.

The previous prime is 222101111220977. The next prime is 222101111221037. The reversal of 222101111221002 is 200122111101222.

It can be written as a sum of positive squares in 2 ways, for example, as 215406374139441 + 6694737081561 = 14676729^2 + 2587419^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474575023743 + ... + 474575024210.

Almost surely, 2^{222101111221002} is an apocalyptic number.

222101111221002 is an abundant number, since it is smaller than the sum of its proper divisors (296134814961882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222101111221002 is a wasteful number, since it uses less digits than its factorization.

222101111221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949150047974 (or 949150047971 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222101111221002 its reverse (200122111101222), we get a palindrome (422223222322224).

The spelling of 222101111221002 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, two".