220100131 has 4 divisors (see below), whose sum is σ = 220311000. Its totient is φ = 219889264.

The previous prime is 220100129. The next prime is 220100141. The reversal of 220100131 is 131001022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220100131 - 2¹ = 220100129 is a prime.

It is a super-2 number, since 2×220100131² = 96888135332434322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220100141) 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, 103861 + ... + 105958.

It is an arithmetic number, because the mean of its divisors is an integer number (55077750).

Almost surely, 2^220100131 is an apocalyptic number.

220100131 is a deficient number, since it is larger than the sum of its proper divisors (210869).

220100131 is a wasteful number, since it uses less digits than its factorization.

220100131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210868.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 220100131 is about 14835.7720055277. The cubic root of 220100131 is about 603.7726464392.

Adding to 220100131 its reverse (131001022), we get a palindrome (351101153).

The spelling of 220100131 in words is "two hundred twenty million, one hundred thousand, one hundred thirty-one".