21011201102 has 16 divisors (see below), whose sum is σ = 33486216480. Its totient is φ = 9887619424.

The previous prime is 21011201093. The next prime is 21011201149. The reversal of 21011201102 is 20110211012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059338 + ... + 1078989.

It is an arithmetic number, because the mean of its divisors is an integer number (2092888530).

Almost surely, 2^21011201102 is an apocalyptic number.

21011201102 is a deficient number, since it is larger than the sum of its proper divisors (12475015378).

21011201102 is an equidigital number, since it uses as much as digits as its factorization.

21011201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138380 (or 2138346 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21011201102 its reverse (20110211012), we get a palindrome (41121412114).

The spelling of 21011201102 in words is "twenty-one billion, eleven million, two hundred one thousand, one hundred two".