21000211122202 has 32 divisors (see below), whose sum is σ = 33977883038400. Its totient is φ = 9676850312448.

The previous prime is 21000211122179. The next prime is 21000211122257. The reversal of 21000211122202 is 20222111200012.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 77239074 + ... + 77510482.

It is an arithmetic number, because the mean of its divisors is an integer number (1061808844950).

Almost surely, 2^{21000211122202} is an apocalyptic number.

21000211122202 is a deficient number, since it is larger than the sum of its proper divisors (12977671916198).

21000211122202 is a wasteful number, since it uses less digits than its factorization.

21000211122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276190.

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

Adding to 21000211122202 its reverse (20222111200012), we get a palindrome (41222322322214).

It can be divided in two parts, 2100021 and 1122202, that added together give a palindrome (3222223).

The spelling of 21000211122202 in words is "twenty-one trillion, two hundred eleven million, one hundred twenty-two thousand, two hundred two".