215000100121340 has 48 divisors (see below), whose sum is σ = 478095008604192. Its totient is φ = 80935125282816.

The previous prime is 215000100121337. The next prime is 215000100121393. The reversal of 215000100121340 is 43121001000512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19257062 + ... + 28299021.

It is an arithmetic number, because the mean of its divisors is an integer number (9960312679254).

Almost surely, 2^{215000100121340} is an apocalyptic number.

215000100121340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215000100121340 is an abundant number, since it is smaller than the sum of its proper divisors (263094908482852).

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

215000100121340 is a wasteful number, since it uses less digits than its factorization.

215000100121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47569406 (or 47569404 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 215000100121340 its reverse (43121001000512), we get a palindrome (258121101121852).

The spelling of 215000100121340 in words is "two hundred fifteen trillion, one hundred million, one hundred twenty-one thousand, three hundred forty".