220500000000031 has 2 divisors, whose sum is σ = 220500000000032. Its totient is φ = 220500000000030.

The previous prime is 220499999999989. The next prime is 220500000000037. The reversal of 220500000000031 is 130000000005022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220500000000031 - 2¹³ = 220499999991839 is a prime.

It is a super-2 number, since 2×220500000000031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220500000000037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110250000000015 + 110250000000016.

It is an arithmetic number, because the mean of its divisors is an integer number (110250000000016).

Almost surely, 2^{220500000000031} is an apocalyptic number.

220500000000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

220500000000031 is an equidigital number, since it uses as much as digits as its factorization.

220500000000031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 13.

Adding to 220500000000031 its reverse (130000000005022), we get a palindrome (350500000005053).

The spelling of 220500000000031 in words is "two hundred twenty trillion, five hundred billion, thirty-one", and thus it is an aban number.