21101222101202 has 16 divisors (see below), whose sum is σ = 32331372832512. Its totient is φ = 10324182496320.

The previous prime is 21101222101177. The next prime is 21101222101277. The reversal of 21101222101202 is 20210122210112.

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, 20666999 + ... + 21663962.

It is an arithmetic number, because the mean of its divisors is an integer number (2020710802032).

Almost surely, 2^{21101222101202} is an apocalyptic number.

21101222101202 is a deficient number, since it is larger than the sum of its proper divisors (11230150731310).

21101222101202 is a wasteful number, since it uses less digits than its factorization.

21101222101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42336313.

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

Adding to 21101222101202 its reverse (20210122210112), we get a palindrome (41311344311314).

The spelling of 21101222101202 in words is "twenty-one trillion, one hundred one billion, two hundred twenty-two million, one hundred one thousand, two hundred two".