222121002101002 has 4 divisors (see below), whose sum is σ = 333181503151506. Its totient is φ = 111060501050500.

The previous prime is 222121002100981. The next prime is 222121002101021. The reversal of 222121002101002 is 200101200121222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 211543032941361 + 10577969159641 = 14544519^2 + 3252379^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55530250525249 + ... + 55530250525252.

Almost surely, 2^{222121002101002} is an apocalyptic number.

222121002101002 is a deficient number, since it is larger than the sum of its proper divisors (111060501050504).

222121002101002 is a wasteful number, since it uses less digits than its factorization.

222121002101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111060501050503.

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

Adding to 222121002101002 its reverse (200101200121222), we get a palindrome (422222202222224).

The spelling of 222121002101002 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two million, one hundred one thousand, two".