222121112121002 has 16 divisors (see below), whose sum is σ = 333485513122272. Its totient is φ = 110959285404240.

The previous prime is 222121112120993. The next prime is 222121112121119. The reversal of 222121112121002 is 200121211121222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37817993 + ... + 43294835.

It is an arithmetic number, because the mean of its divisors is an integer number (20842844570142).

Almost surely, 2^{222121112121002} is an apocalyptic number.

222121112121002 is a deficient number, since it is larger than the sum of its proper divisors (111364401001270).

222121112121002 is a wasteful number, since it uses less digits than its factorization.

222121112121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495333.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222121112121002 its reverse (200121211121222), we get a palindrome (422242323242224).

The spelling of 222121112121002 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, two".