102022222261 has 2 divisors, whose sum is σ = 102022222262. Its totient is φ = 102022222260.

The previous prime is 102022222207. The next prime is 102022222273. The reversal of 102022222261 is 162222220201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101454353361 + 567868900 = 318519^2 + 23830^2 .

It is an emirp because it is prime and its reverse (162222220201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102022222261 - 2¹¹ = 102022220213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102022222661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011111130 + 51011111131.

It is an arithmetic number, because the mean of its divisors is an integer number (51011111131).

Almost surely, 2^102022222261 is an apocalyptic number.

It is an amenable number.

102022222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

102022222261 is an equidigital number, since it uses as much as digits as its factorization.

102022222261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 102022222261 its reverse (162222220201), we get a palindrome (264244442462).

The spelling of 102022222261 in words is "one hundred two billion, twenty-two million, two hundred twenty-two thousand, two hundred sixty-one".