20000022019997 has 2 divisors, whose sum is σ = 20000022019998. Its totient is φ = 20000022019996.

The previous prime is 20000022019973. The next prime is 20000022020003. The reversal of 20000022019997 is 79991022000002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11882229537721 + 8117792482276 = 3447061^2 + 2849174^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000022019997 - 2⁸ = 20000022019741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000022019907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000011009998 + 10000011009999.

It is an arithmetic number, because the mean of its divisors is an integer number (10000011009999).

Almost surely, 2^{20000022019997} is an apocalyptic number.

It is an amenable number.

20000022019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000022019997 is an equidigital number, since it uses as much as digits as its factorization.

20000022019997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

Adding to 20000022019997 its reverse (79991022000002), we get a palindrome (99991044019999).

The spelling of 20000022019997 in words is "twenty trillion, twenty-two million, nineteen thousand, nine hundred ninety-seven".