20021122093837 has 2 divisors, whose sum is σ = 20021122093838. Its totient is φ = 20021122093836.

The previous prime is 20021122093813. The next prime is 20021122093871. The reversal of 20021122093837 is 73839022112002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20007916866441 + 13205227396 = 4473021^2 + 114914^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021122093837 - 2¹⁵ = 20021122061069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20021122093837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021122093897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010561046918 + 10010561046919.

It is an arithmetic number, because the mean of its divisors is an integer number (10010561046919).

Almost surely, 2^{20021122093837} is an apocalyptic number.

It is an amenable number.

20021122093837 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021122093837 is an equidigital number, since it uses as much as digits as its factorization.

20021122093837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 20021122093837 in words is "twenty trillion, twenty-one billion, one hundred twenty-two million, ninety-three thousand, eight hundred thirty-seven".