21010312012102 has 12 divisors (see below), whose sum is σ = 36660850551900. Its totient is φ = 9004419433716.

The previous prime is 21010312012057. The next prime is 21010312012127. The reversal of 21010312012102 is 20121021301012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107195469352 + ... + 107195469547.

It is an arithmetic number, because the mean of its divisors is an integer number (3055070879325).

Almost surely, 2^{21010312012102} is an apocalyptic number.

21010312012102 is a deficient number, since it is larger than the sum of its proper divisors (15650538539798).

21010312012102 is a wasteful number, since it uses less digits than its factorization.

21010312012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214390938915 (or 214390938908 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21010312012102 its reverse (20121021301012), we get a palindrome (41131333313114).

The spelling of 21010312012102 in words is "twenty-one trillion, ten billion, three hundred twelve million, twelve thousand, one hundred two".