21012210210110 has 16 divisors (see below), whose sum is σ = 43225118146656. Its totient is φ = 7204186357728.

The previous prime is 21012210210109. The next prime is 21012210210161. The reversal of 21012210210110 is 1101201221012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

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, 150087215717 + ... + 150087215856.

It is an arithmetic number, because the mean of its divisors is an integer number (2701569884166).

Almost surely, 2^{21012210210110} is an apocalyptic number.

21012210210110 is an abundant number, since it is smaller than the sum of its proper divisors (22212907936546).

21012210210110 is a wasteful number, since it uses less digits than its factorization.

21012210210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300174431587.

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

Adding to 21012210210110 its reverse (1101201221012), we get a palindrome (22113411431122).

The spelling of 21012210210110 in words is "twenty-one trillion, twelve billion, two hundred ten million, two hundred ten thousand, one hundred ten".