220101001031 has 2 divisors, whose sum is σ = 220101001032. Its totient is φ = 220101001030.

The previous prime is 220101001027. The next prime is 220101001063. The reversal of 220101001031 is 130100101022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220101001031 - 2² = 220101001027 is a prime.

It is a super-2 number, since 2×220101001031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220101001531) 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 as a sum of consecutive naturals, namely, 110050500515 + 110050500516.

It is an arithmetic number, because the mean of its divisors is an integer number (110050500516).

Almost surely, 2^220101001031 is an apocalyptic number.

220101001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

220101001031 is an equidigital number, since it uses as much as digits as its factorization.

220101001031 is an odious number, because the sum of its binary digits is odd.

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

Adding to 220101001031 its reverse (130100101022), we get a palindrome (350201102053).

Subtracting from 220101001031 its reverse (130100101022), we obtain a palindrome (90000900009).

The spelling of 220101001031 in words is "two hundred twenty billion, one hundred one million, one thousand, thirty-one".