2211201505156 has 24 divisors (see below), whose sum is σ = 4574899667520. Its totient is φ = 914979932832.

The previous prime is 2211201505147. The next prime is 2211201505259. The reversal of 2211201505156 is 6515051021122.

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, 1361576470 + ... + 1361578093.

It is an arithmetic number, because the mean of its divisors is an integer number (190620819480).

Almost surely, 2^{2211201505156} is an apocalyptic number.

It is an amenable number.

2211201505156 is an abundant number, since it is smaller than the sum of its proper divisors (2363698162364).

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

2211201505156 is a wasteful number, since it uses less digits than its factorization.

2211201505156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723154603 (or 2723154601 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 2211201505156 its reverse (6515051021122), we get a palindrome (8726252526278).

The spelling of 2211201505156 in words is "two trillion, two hundred eleven billion, two hundred one million, five hundred five thousand, one hundred fifty-six".