20220020219977 has 2 divisors, whose sum is σ = 20220020219978. Its totient is φ = 20220020219976.

The previous prime is 20220020219939. The next prime is 20220020220019. The reversal of 20220020219977 is 77991202002202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13717423319616 + 6502596900361 = 3703704^2 + 2550019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20220020219977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220020217977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110010109988 + 10110010109989.

It is an arithmetic number, because the mean of its divisors is an integer number (10110010109989).

Almost surely, 2^{20220020219977} is an apocalyptic number.

It is an amenable number.

20220020219977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220020219977 is an equidigital number, since it uses as much as digits as its factorization.

20220020219977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 20220020219977 in words is "twenty trillion, two hundred twenty billion, twenty million, two hundred nineteen thousand, nine hundred seventy-seven".