215113255100 has 36 divisors (see below), whose sum is σ = 469008111768. Its totient is φ = 85637496000.

The previous prime is 215113255099. The next prime is 215113255121. The reversal of 215113255100 is 1552311512.

It is a self number, because there is not a number n which added to its sum of digits gives 215113255100.

It is a congruent number.

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, 5076371 + ... + 5118570.

Almost surely, 2^215113255100 is an apocalyptic number.

215113255100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215113255100 is an abundant number, since it is smaller than the sum of its proper divisors (253894856668).

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

215113255100 is a wasteful number, since it uses less digits than its factorization.

215113255100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10195166 (or 10195159 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 215113255100 its reverse (1552311512), we get a palindrome (216665566612).

The spelling of 215113255100 in words is "two hundred fifteen billion, one hundred thirteen million, two hundred fifty-five thousand, one hundred".