101220143220131 has 12 divisors (see below), whose sum is σ = 109619054699112. Its totient is φ = 93422205167616.

The previous prime is 101220143220047. The next prime is 101220143220149. The reversal of 101220143220131 is 131022341022101.

It is not a de Polignac number, because 101220143220131 - 2⁴² = 96822096709027 is a prime.

It is a super-2 number, since 2×101220143220131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220143220097 and 101220143220106.

It is not an unprimeable number, because it can be changed into a prime (101220143220181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36389261 + ... + 39071966.

It is an arithmetic number, because the mean of its divisors is an integer number (9134921224926).

Almost surely, 2^{101220143220131} is an apocalyptic number.

101220143220131 is a deficient number, since it is larger than the sum of its proper divisors (8398911478981).

101220143220131 is an equidigital number, since it uses as much as digits as its factorization.

101220143220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75469190 (or 75469177 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 101220143220131 its reverse (131022341022101), we get a palindrome (232242484242232).

The spelling of 101220143220131 in words is "one hundred one trillion, two hundred twenty billion, one hundred forty-three million, two hundred twenty thousand, one hundred thirty-one".