2202022212521 has 2 divisors, whose sum is σ = 2202022212522. Its totient is φ = 2202022212520.

The previous prime is 2202022212503. The next prime is 2202022212581. The reversal of 2202022212521 is 1252122202022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1568979202921 + 633043009600 = 1252589^2 + 795640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202022212521 - 2¹⁴ = 2202022196137 is a prime.

It is not a weakly prime, because it can be changed into another prime (2202022212581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101011106260 + 1101011106261.

It is an arithmetic number, because the mean of its divisors is an integer number (1101011106261).

Almost surely, 2^{2202022212521} is an apocalyptic number.

It is an amenable number.

2202022212521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2202022212521 is an equidigital number, since it uses as much as digits as its factorization.

2202022212521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 2202022212521 its reverse (1252122202022), we get a palindrome (3454144414543).

The spelling of 2202022212521 in words is "two trillion, two hundred two billion, twenty-two million, two hundred twelve thousand, five hundred twenty-one".