1263222223621 has 2 divisors, whose sum is σ = 1263222223622. Its totient is φ = 1263222223620.

The previous prime is 1263222223619. The next prime is 1263222223631.

1263222223621 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721504143396 + 541718080225 = 849414^2 + 736015^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1263222223621 - 2¹ = 1263222223619 is a prime.

Together with 1263222223619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263222223631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631611111810 + 631611111811.

It is an arithmetic number, because the mean of its divisors is an integer number (631611111811).

Almost surely, 2^{1263222223621} is an apocalyptic number.

It is an amenable number.

1263222223621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263222223621 is an equidigital number, since it uses as much as digits as its factorization.

1263222223621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 34.

The spelling of 1263222223621 in words is "one trillion, two hundred sixty-three billion, two hundred twenty-two million, two hundred twenty-three thousand, six hundred twenty-one".