101220131 has 8 divisors (see below), whose sum is σ = 101954544. Its totient is φ = 100488960.

The previous prime is 101220113. The next prime is 101220137. The reversal of 101220131 is 131022101.

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

It is a cyclic number.

It is not a de Polignac number, because 101220131 - 2²² = 97025827 is a prime.

It is a super-2 number, since 2×101220131² = 20491029839314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220137) 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, 103115 + ... + 104091.

It is an arithmetic number, because the mean of its divisors is an integer number (12744318).

Almost surely, 2^101220131 is an apocalyptic number.

101220131 is a deficient number, since it is larger than the sum of its proper divisors (734413).

101220131 is an equidigital number, since it uses as much as digits as its factorization.

101220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 101220131 is about 10060.8215867294. The cubic root of 101220131 is about 466.0390393224.

Adding to 101220131 its reverse (131022101), we get a palindrome (232242232).

The spelling of 101220131 in words is "one hundred one million, two hundred twenty thousand, one hundred thirty-one".