21221022200039 has 2 divisors, whose sum is σ = 21221022200040. Its totient is φ = 21221022200038.

The previous prime is 21221022199987. The next prime is 21221022200069. The reversal of 21221022200039 is 93000222012212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21221022200039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21221022199990 and 21221022200017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21221022200069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610511100019 + 10610511100020.

It is an arithmetic number, because the mean of its divisors is an integer number (10610511100020).

Almost surely, 2^{21221022200039} is an apocalyptic number.

21221022200039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221022200039 is an equidigital number, since it uses as much as digits as its factorization.

21221022200039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 21221022200039 in words is "twenty-one trillion, two hundred twenty-one billion, twenty-two million, two hundred thousand, thirty-nine".