202157111 has 8 divisors (see below), whose sum is σ = 221277504. Its totient is φ = 183546720.

The previous prime is 202157083. The next prime is 202157117. The reversal of 202157111 is 111751202.

It is a happy number.

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-202157111 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 (202157117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126671 + ... + 128256.

It is an arithmetic number, because the mean of its divisors is an integer number (27659688).

Almost surely, 2^202157111 is an apocalyptic number.

202157111 is a deficient number, since it is larger than the sum of its proper divisors (19120393).

202157111 is a wasteful number, since it uses less digits than its factorization.

202157111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255001.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 202157111 is about 14218.1964749401. The cubic root of 202157111 is about 586.8985107604.

The spelling of 202157111 in words is "two hundred two million, one hundred fifty-seven thousand, one hundred eleven".