2221235135557 has 2 divisors, whose sum is σ = 2221235135558. Its totient is φ = 2221235135556.

The previous prime is 2221235135419. The next prime is 2221235135563. The reversal of 2221235135557 is 7555315321222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2210853767236 + 10381368321 = 1486894^2 + 101889^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221235135557 - 2¹⁵ = 2221235102789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221235135057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110617567778 + 1110617567779.

It is an arithmetic number, because the mean of its divisors is an integer number (1110617567779).

Almost surely, 2^{2221235135557} is an apocalyptic number.

It is an amenable number.

2221235135557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221235135557 is an equidigital number, since it uses as much as digits as its factorization.

2221235135557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630000, while the sum is 43.

The spelling of 2221235135557 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-five million, one hundred thirty-five thousand, five hundred fifty-seven".