21212111202002 has 16 divisors (see below), whose sum is σ = 36408568072320. Its totient is φ = 9079667583648.

The previous prime is 21212111201999. The next prime is 21212111202059. The reversal of 21212111202002 is 20020211121212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936423038 + ... + 936445689.

It is an arithmetic number, because the mean of its divisors is an integer number (2275535504520).

Almost surely, 2^{21212111202002} is an apocalyptic number.

21212111202002 is a deficient number, since it is larger than the sum of its proper divisors (15196456870318).

21212111202002 is a wasteful number, since it uses less digits than its factorization.

21212111202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872869545.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21212111202002 its reverse (20020211121212), we get a palindrome (41232322323214).

The spelling of 21212111202002 in words is "twenty-one trillion, two hundred twelve billion, one hundred eleven million, two hundred two thousand, two".