21120202010102 has 16 divisors (see below), whose sum is σ = 34118538491520. Its totient is φ = 9747417231552.

The previous prime is 21120202010093. The next prime is 21120202010119. The reversal of 21120202010102 is 20101020202112.

It is a super-2 number, since 2×21120202010102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 14644358 + ... + 16021785.

It is an arithmetic number, because the mean of its divisors is an integer number (2132408655720).

Almost surely, 2^{21120202010102} is an apocalyptic number.

21120202010102 is a deficient number, since it is larger than the sum of its proper divisors (12998336481418).

21120202010102 is a wasteful number, since it uses less digits than its factorization.

21120202010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30692647.

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

Adding to 21120202010102 its reverse (20101020202112), we get a palindrome (41221222212214).

It can be divided in two parts, 21120202010 and 102, that added together give a palindrome (21120202112).

The spelling of 21120202010102 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, ten thousand, one hundred two".