211201113156 has 96 divisors (see below), whose sum is σ = 547580597760. Its totient is φ = 62815948800.

The previous prime is 211201113107. The next prime is 211201113161. The reversal of 211201113156 is 651311102112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4970955 + ... + 5013261.

It is an arithmetic number, because the mean of its divisors is an integer number (5703964560).

Almost surely, 2^211201113156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211201113156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273790298880).

211201113156 is an abundant number, since it is smaller than the sum of its proper divisors (336379484604).

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

211201113156 is a wasteful number, since it uses less digits than its factorization.

211201113156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43025 (or 43023 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

Adding to 211201113156 its reverse (651311102112), we get a palindrome (862512215268).

The spelling of 211201113156 in words is "two hundred eleven billion, two hundred one million, one hundred thirteen thousand, one hundred fifty-six".