21000302212100 has 36 divisors (see below), whose sum is σ = 45676388274048. Its totient is φ = 8380631028000.

The previous prime is 21000302212079. The next prime is 21000302212121. The reversal of 21000302212100 is 121220300012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21000302212079) and next prime (21000302212121).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243579896 + ... + 243666095.

It is an arithmetic number, because the mean of its divisors is an integer number (1268788563168).

Almost surely, 2^{21000302212100} is an apocalyptic number.

21000302212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000302212100 is an abundant number, since it is smaller than the sum of its proper divisors (24676086061948).

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

21000302212100 is a wasteful number, since it uses less digits than its factorization.

21000302212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487246436 (or 487246429 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21000302212100 its reverse (121220300012), we get a palindrome (21121522512112).

The spelling of 21000302212100 in words is "twenty-one trillion, three hundred two million, two hundred twelve thousand, one hundred".