215021055234100 has 36 divisors (see below), whose sum is σ = 491153357749600. Its totient is φ = 81481663035360.

The previous prime is 215021055234061. The next prime is 215021055234107. The reversal of 215021055234100 is 1432550120512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215021055234107) 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, 56584486320 + ... + 56584490119.

Almost surely, 2^{215021055234100} is an apocalyptic number.

215021055234100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215021055234100 is an abundant number, since it is smaller than the sum of its proper divisors (276132302515500).

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

215021055234100 is a wasteful number, since it uses less digits than its factorization.

215021055234100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113168976472 (or 113168976465 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 215021055234100 in words is "two hundred fifteen trillion, twenty-one billion, fifty-five million, two hundred thirty-four thousand, one hundred".