21214211244100 has 108 divisors (see below), whose sum is σ = 55525994900544. Its totient is φ = 6890630938560.

The previous prime is 21214211244097. The next prime is 21214211244103. The reversal of 21214211244100 is 144211241212.

It is an interprime number because it is at equal distance from previous prime (21214211244097) and next prime (21214211244103).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (21214211244103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41722392 + ... + 42227791.

Almost surely, 2^{21214211244100} is an apocalyptic number.

21214211244100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21214211244100 is an abundant number, since it is smaller than the sum of its proper divisors (34311783656444).

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

21214211244100 is a wasteful number, since it uses less digits than its factorization.

21214211244100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83950242 (or 83950216 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 21214211244100 its reverse (144211241212), we get a palindrome (21358422485312).

The spelling of 21214211244100 in words is "twenty-one trillion, two hundred fourteen billion, two hundred eleven million, two hundred forty-four thousand, one hundred".