21100210112010 has 32 divisors (see below), whose sum is σ = 50641885973952. Its totient is φ = 5626569173760.

The previous prime is 21100210111969. The next prime is 21100210112017. The reversal of 21100210112010 is 1021101200112.

It is not an unprimeable number, because it can be changed into a prime (21100210112017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8475184 + ... + 10678443.

It is an arithmetic number, because the mean of its divisors is an integer number (1582558936686).

Almost surely, 2^{21100210112010} is an apocalyptic number.

21100210112010 is an abundant number, since it is smaller than the sum of its proper divisors (29541675861942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21100210112010 is a wasteful number, since it uses less digits than its factorization.

21100210112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19190358.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21100210112010 its reverse (1021101200112), we get a palindrome (22121311312122).

The spelling of 21100210112010 in words is "twenty-one trillion, one hundred billion, two hundred ten million, one hundred twelve thousand, ten".