211201113157 has 4 divisors (see below), whose sum is σ = 212864114176. Its totient is φ = 209538112140.

The previous prime is 211201113107. The next prime is 211201113161. The reversal of 211201113157 is 751311102112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211201113157 - 2²³ = 211192724549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201113107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831500319 + ... + 831500572.

It is an arithmetic number, because the mean of its divisors is an integer number (53216028544).

Almost surely, 2^211201113157 is an apocalyptic number.

It is an amenable number.

211201113157 is a deficient number, since it is larger than the sum of its proper divisors (1663001019).

211201113157 is a wasteful number, since it uses less digits than its factorization.

211201113157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663001018.

The product of its (nonzero) digits is 420, while the sum is 25.

Adding to 211201113157 its reverse (751311102112), we get a palindrome (962512215269).

The spelling of 211201113157 in words is "two hundred eleven billion, two hundred one million, one hundred thirteen thousand, one hundred fifty-seven".