20150111216 has 40 divisors (see below), whose sum is σ = 41196068640. Its totient is φ = 9528713216.

The previous prime is 20150111167. The next prime is 20150111263. The reversal of 20150111216 is 61211105102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274865 + ... + 340368.

It is an arithmetic number, because the mean of its divisors is an integer number (1029901716).

Almost surely, 2^20150111216 is an apocalyptic number.

It is an amenable number.

20150111216 is an abundant number, since it is smaller than the sum of its proper divisors (21045957424).

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

20150111216 is a wasteful number, since it uses less digits than its factorization.

20150111216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615353 (or 615347 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 20150111216 its reverse (61211105102), we get a palindrome (81361216318).

The spelling of 20150111216 in words is "twenty billion, one hundred fifty million, one hundred eleven thousand, two hundred sixteen".