21000212201102 has 16 divisors (see below), whose sum is σ = 31730952105072. Its totient is φ = 10423231569600.

The previous prime is 21000212201057. The next prime is 21000212201107. The reversal of 21000212201102 is 20110221200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000212201107) by changing a digit.

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, 11858813 + ... + 13514135.

It is an arithmetic number, because the mean of its divisors is an integer number (1983184506567).

Almost surely, 2^{21000212201102} is an apocalyptic number.

21000212201102 is a deficient number, since it is larger than the sum of its proper divisors (10730739903970).

21000212201102 is a wasteful number, since it uses less digits than its factorization.

21000212201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701763.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21000212201102 its reverse (20110221200012), we get a palindrome (41110433401114).

The spelling of 21000212201102 in words is "twenty-one trillion, two hundred twelve million, two hundred one thousand, one hundred two".