2220220022261 has 2 divisors, whose sum is σ = 2220220022262. Its totient is φ = 2220220022260.

The previous prime is 2220220022177. The next prime is 2220220022263. The reversal of 2220220022261 is 1622200220222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2140339740100 + 79880282161 = 1462990^2 + 282631^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220220022261 - 2³⁴ = 2203040153077 is a prime.

Together with 2220220022263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220220022263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110110011130 + 1110110011131.

It is an arithmetic number, because the mean of its divisors is an integer number (1110110011131).

Almost surely, 2^{2220220022261} is an apocalyptic number.

It is an amenable number.

2220220022261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220220022261 is an equidigital number, since it uses as much as digits as its factorization.

2220220022261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 2220220022261 its reverse (1622200220222), we get a palindrome (3842420242483).

The spelling of 2220220022261 in words is "two trillion, two hundred twenty billion, two hundred twenty million, twenty-two thousand, two hundred sixty-one".