211155001157 has 8 divisors (see below), whose sum is σ = 224150635800. Its totient is φ = 198223227904.

The previous prime is 211155001111. The next prime is 211155001163. The reversal of 211155001157 is 751100551112.

It is a happy number.

211155001157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20387841796 + 190767159361 = 142786^2 + 436769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211155001157 is a prime.

It is a super-2 number, since 2×211155001157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211155001357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15958532 + ... + 15971757.

It is an arithmetic number, because the mean of its divisors is an integer number (28018829475).

Almost surely, 2^211155001157 is an apocalyptic number.

It is an amenable number.

211155001157 is a deficient number, since it is larger than the sum of its proper divisors (12995634643).

211155001157 is a wasteful number, since it uses less digits than its factorization.

211155001157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31930695.

The product of its (nonzero) digits is 1750, while the sum is 29.

Adding to 211155001157 its reverse (751100551112), we get a palindrome (962255552269).

The spelling of 211155001157 in words is "two hundred eleven billion, one hundred fifty-five million, one thousand, one hundred fifty-seven".