220120201000031 has 2 divisors, whose sum is σ = 220120201000032. Its totient is φ = 220120201000030.

The previous prime is 220120201000027. The next prime is 220120201000039. The reversal of 220120201000031 is 130000102021022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220120201000031 - 2² = 220120201000027 is a prime.

It is a super-2 number, since 2×220120201000031² (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 (220120201000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060100500015 + 110060100500016.

It is an arithmetic number, because the mean of its divisors is an integer number (110060100500016).

Almost surely, 2^{220120201000031} is an apocalyptic number.

220120201000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

220120201000031 is an equidigital number, since it uses as much as digits as its factorization.

220120201000031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 220120201000031 its reverse (130000102021022), we get a palindrome (350120303021053).

The spelling of 220120201000031 in words is "two hundred twenty trillion, one hundred twenty billion, two hundred one million, thirty-one", and thus it is an aban number.