1122001390021 has 2 divisors, whose sum is σ = 1122001390022. Its totient is φ = 1122001390020.

The previous prime is 1122001390007. The next prime is 1122001390031. The reversal of 1122001390021 is 1200931002211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817507113921 + 304494276100 = 904161^2 + 551810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122001390021 - 2¹¹ = 1122001387973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122001389974 and 1122001390001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122001390031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561000695010 + 561000695011.

It is an arithmetic number, because the mean of its divisors is an integer number (561000695011).

Almost surely, 2^{1122001390021} is an apocalyptic number.

It is an amenable number.

1122001390021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122001390021 is an equidigital number, since it uses as much as digits as its factorization.

1122001390021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 1122001390021 its reverse (1200931002211), we get a palindrome (2322932392232).

The spelling of 1122001390021 in words is "one trillion, one hundred twenty-two billion, one million, three hundred ninety thousand, twenty-one".