1122020999897 has 12 divisors (see below), whose sum is σ = 1327330276560. Its totient is φ = 945431735976.

The previous prime is 1122020999887. The next prime is 1122020999909. The reversal of 1122020999897 is 7989990202211.

It is not a de Polignac number, because 1122020999897 - 2⁶ = 1122020999833 is a prime.

It is a super-2 number, since 2×1122020999897² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122020999837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194051243 + ... + 194057024.

It is an arithmetic number, because the mean of its divisors is an integer number (110610856380).

Almost surely, 2^{1122020999897} is an apocalyptic number.

It is an amenable number.

1122020999897 is a deficient number, since it is larger than the sum of its proper divisors (205309276663).

1122020999897 is an equidigital number, since it uses as much as digits as its factorization.

1122020999897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388108340 (or 388108333 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 1122020999897 in words is "one trillion, one hundred twenty-two billion, twenty million, nine hundred ninety-nine thousand, eight hundred ninety-seven".