220101157 has 4 divisors (see below), whose sum is σ = 221419296. Its totient is φ = 218783020.

The previous prime is 220101137. The next prime is 220101163. The reversal of 220101157 is 751101022.

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 220101157 - 2¹¹ = 220099109 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 (220101107) 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, 658819 + ... + 659152.

It is an arithmetic number, because the mean of its divisors is an integer number (55354824).

Almost surely, 2^220101157 is an apocalyptic number.

It is an amenable number.

220101157 is a deficient number, since it is larger than the sum of its proper divisors (1318139).

220101157 is a wasteful number, since it uses less digits than its factorization.

220101157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318138.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 220101157 is about 14835.8065840722. The cubic root of 220101157 is about 603.7735846028.

Adding to 220101157 its reverse (751101022), we get a palindrome (971202179).

The spelling of 220101157 in words is "two hundred twenty million, one hundred one thousand, one hundred fifty-seven".