1021222220969 has 2 divisors, whose sum is σ = 1021222220970. Its totient is φ = 1021222220968.

The previous prime is 1021222220903. The next prime is 1021222221043. The reversal of 1021222220969 is 9690222221201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 569353248025 + 451868972944 = 754555^2 + 672212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021222220969 is a prime.

It is a super-2 number, since 2×1021222220969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021222220869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510611110484 + 510611110485.

It is an arithmetic number, because the mean of its divisors is an integer number (510611110485).

Almost surely, 2^{1021222220969} is an apocalyptic number.

It is an amenable number.

1021222220969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021222220969 is an equidigital number, since it uses as much as digits as its factorization.

1021222220969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 1021222220969 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, nine hundred sixty-nine".