21310201110100 has 36 divisors (see below), whose sum is σ = 52849298754784. Its totient is φ = 7306354666080.

The previous prime is 21310201110047. The next prime is 21310201110103. The reversal of 21310201110100 is 101110201312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310201110103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15221571522 + ... + 15221572921.

Almost surely, 2^{21310201110100} is an apocalyptic number.

21310201110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310201110100 is an abundant number, since it is smaller than the sum of its proper divisors (31539097644684).

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

21310201110100 is a wasteful number, since it uses less digits than its factorization.

21310201110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30443144464 (or 30443144457 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21310201110100 its reverse (101110201312), we get a palindrome (21411311311412).

The spelling of 21310201110100 in words is "twenty-one trillion, three hundred ten billion, two hundred one million, one hundred ten thousand, one hundred".