215140000120 has 64 divisors (see below), whose sum is σ = 494383500000. Its totient is φ = 84234129408.

The previous prime is 215140000073. The next prime is 215140000133. The reversal of 215140000120 is 21000041512.

It is a junction number, because it is equal to n+sod(n) for n = 215140000094 and 215140000103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354256 + ... + 745504.

Almost surely, 2^215140000120 is an apocalyptic number.

215140000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215140000120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247191750000).

215140000120 is an abundant number, since it is smaller than the sum of its proper divisors (279243499880).

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

215140000120 is a wasteful number, since it uses less digits than its factorization.

215140000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391552 (or 391548 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 215140000120 its reverse (21000041512), we get a palindrome (236140041632).

The spelling of 215140000120 in words is "two hundred fifteen billion, one hundred forty million, one hundred twenty", and thus it is an aban number.