222121101002002 has 16 divisors (see below), whose sum is σ = 336537891609624. Its totient is φ = 109942179040000.

The previous prime is 222121101001999. The next prime is 222121101002057. The reversal of 222121101002002 is 200200101121222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207952810283761 + 14168290718241 = 14420569^2 + 3764079^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92623399 + ... + 94991242.

Almost surely, 2^{222121101002002} is an apocalyptic number.

222121101002002 is a deficient number, since it is larger than the sum of its proper divisors (114416790607622).

222121101002002 is a wasteful number, since it uses less digits than its factorization.

222121101002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187620605.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222121101002002 its reverse (200200101121222), we get a palindrome (422321202123224).

The spelling of 222121101002002 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred one million, two thousand, two".