21012012210110 has 8 divisors (see below), whose sum is σ = 37821621978216. Its totient is φ = 8404804884040.

The previous prime is 21012012210083. The next prime is 21012012210149. The reversal of 21012012210110 is 1101221021012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050600610496 + ... + 1050600610515.

It is an arithmetic number, because the mean of its divisors is an integer number (4727702747277).

Almost surely, 2^{21012012210110} is an apocalyptic number.

21012012210110 is a deficient number, since it is larger than the sum of its proper divisors (16809609768106).

21012012210110 is a wasteful number, since it uses less digits than its factorization.

21012012210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101201221018.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21012012210110 its reverse (1101221021012), we get a palindrome (22113233231122).

The spelling of 21012012210110 in words is "twenty-one trillion, twelve billion, twelve million, two hundred ten thousand, one hundred ten".