20000200021969 has 2 divisors, whose sum is σ = 20000200021970. Its totient is φ = 20000200021968.

The previous prime is 20000200021939. The next prime is 20000200021979. The reversal of 20000200021969 is 96912000200002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18587204218944 + 1412995803025 = 4311288^2 + 1188695^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000200021969 - 2⁹ = 20000200021457 is a prime.

It is a super-2 number, since 2×20000200021969² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20000200021969.

It is not a weakly prime, because it can be changed into another prime (20000200021939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000100010984 + 10000100010985.

It is an arithmetic number, because the mean of its divisors is an integer number (10000100010985).

Almost surely, 2^{20000200021969} is an apocalyptic number.

It is an amenable number.

20000200021969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000200021969 is an equidigital number, since it uses as much as digits as its factorization.

20000200021969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 20000200021969 in words is "twenty trillion, two hundred million, twenty-one thousand, nine hundred sixty-nine".