21210000220101 has 96 divisors (see below), whose sum is σ = 36482224988160. Its totient is φ = 10835741347200.

The previous prime is 21210000220093. The next prime is 21210000220103. The reversal of 21210000220101 is 10102200001212.

It is not a de Polignac number, because 21210000220101 - 2³ = 21210000220093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210000220103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 745582860 + ... + 745611306.

It is an arithmetic number, because the mean of its divisors is an integer number (380023176960).

Almost surely, 2^{21210000220101} is an apocalyptic number.

21210000220101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21210000220101 is a deficient number, since it is larger than the sum of its proper divisors (15272224768059).

21210000220101 is a wasteful number, since it uses less digits than its factorization.

21210000220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36095 (or 36088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21210000220101 its reverse (10102200001212), we get a palindrome (31312200221313).

The spelling of 21210000220101 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty thousand, one hundred one".