102220511 has 2 divisors, whose sum is σ = 102220512. Its totient is φ = 102220510.

The previous prime is 102220499. The next prime is 102220519. The reversal of 102220511 is 115022201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220511 is a prime.

It is a super-2 number, since 2×102220511² = 20898065738202242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110255 + 51110256.

It is an arithmetic number, because the mean of its divisors is an integer number (51110256).

Almost surely, 2^102220511 is an apocalyptic number.

102220511 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220511 is an equidigital number, since it uses as much as digits as its factorization.

102220511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 102220511 is about 10110.4159657256. The cubic root of 102220511 is about 467.5693298001.

Adding to 102220511 its reverse (115022201), we get a palindrome (217242712).

The spelling of 102220511 in words is "one hundred two million, two hundred twenty thousand, five hundred eleven".