2220541111531 has 2 divisors, whose sum is σ = 2220541111532. Its totient is φ = 2220541111530.

The previous prime is 2220541111517. The next prime is 2220541111559. The reversal of 2220541111531 is 1351111450222.

It is an a-pointer prime, because the next prime (2220541111559) can be obtained adding 2220541111531 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220541111531 - 2³⁵ = 2186181373163 is a prime.

It is a super-2 number, since 2×2220541111531² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2220541111531.

It is not a weakly prime, because it can be changed into another prime (2220541111631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110270555765 + 1110270555766.

It is an arithmetic number, because the mean of its divisors is an integer number (1110270555766).

Almost surely, 2^{2220541111531} is an apocalyptic number.

2220541111531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220541111531 is an equidigital number, since it uses as much as digits as its factorization.

2220541111531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 2220541111531 its reverse (1351111450222), we get a palindrome (3571652561753).

The spelling of 2220541111531 in words is "two trillion, two hundred twenty billion, five hundred forty-one million, one hundred eleven thousand, five hundred thirty-one".