2220120031397 has 2 divisors, whose sum is σ = 2220120031398. Its totient is φ = 2220120031396.

The previous prime is 2220120031301. The next prime is 2220120031399. The reversal of 2220120031397 is 7931300210222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2219953982401 + 166048996 = 1489951^2 + 12886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220120031397 - 2²⁴ = 2220103254181 is a prime.

Together with 2220120031399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220120031399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110060015698 + 1110060015699.

It is an arithmetic number, because the mean of its divisors is an integer number (1110060015699).

Almost surely, 2^{2220120031397} is an apocalyptic number.

It is an amenable number.

2220120031397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220120031397 is an equidigital number, since it uses as much as digits as its factorization.

2220120031397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 2220120031397 in words is "two trillion, two hundred twenty billion, one hundred twenty million, thirty-one thousand, three hundred ninety-seven".