21112202020102 has 32 divisors (see below), whose sum is σ = 32790139225344. Its totient is φ = 10184258304000.

The previous prime is 21112202020093. The next prime is 21112202020111. The reversal of 21112202020102 is 20102020221112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21112202020093) and next prime (21112202020111).

It is a super-2 number, since 2×21112202020102² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 95246602 + ... + 95468002.

It is an arithmetic number, because the mean of its divisors is an integer number (1024691850792).

Almost surely, 2^{21112202020102} is an apocalyptic number.

21112202020102 is a deficient number, since it is larger than the sum of its proper divisors (11677937205242).

21112202020102 is a wasteful number, since it uses less digits than its factorization.

21112202020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226144.

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

Adding to 21112202020102 its reverse (20102020221112), we get a palindrome (41214222241214).

The spelling of 21112202020102 in words is "twenty-one trillion, one hundred twelve billion, two hundred two million, twenty thousand, one hundred two".