2221099983637 has 2 divisors, whose sum is σ = 2221099983638. Its totient is φ = 2221099983636.

The previous prime is 2221099983607. The next prime is 2221099983643. The reversal of 2221099983637 is 7363899901222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1646792159076 + 574307824561 = 1283274^2 + 757831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221099983637 - 2¹⁹ = 2221099459349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221099983607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110549991818 + 1110549991819.

It is an arithmetic number, because the mean of its divisors is an integer number (1110549991819).

Almost surely, 2^{2221099983637} is an apocalyptic number.

It is an amenable number.

2221099983637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221099983637 is an equidigital number, since it uses as much as digits as its factorization.

2221099983637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 2221099983637 in words is "two trillion, two hundred twenty-one billion, ninety-nine million, nine hundred eighty-three thousand, six hundred thirty-seven".