222010322621 has 2 divisors, whose sum is σ = 222010322622. Its totient is φ = 222010322620.

The previous prime is 222010322603. The next prime is 222010322627. The reversal of 222010322621 is 126223010222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132557887225 + 89452435396 = 364085^2 + 299086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222010322621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222010322627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111005161310 + 111005161311.

It is an arithmetic number, because the mean of its divisors is an integer number (111005161311).

Almost surely, 2^222010322621 is an apocalyptic number.

It is an amenable number.

222010322621 is a deficient number, since it is larger than the sum of its proper divisors (1).

222010322621 is an equidigital number, since it uses as much as digits as its factorization.

222010322621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 222010322621 its reverse (126223010222), we get a palindrome (348233332843).

The spelling of 222010322621 in words is "two hundred twenty-two billion, ten million, three hundred twenty-two thousand, six hundred twenty-one".