102220022201261 has 2 divisors, whose sum is σ = 102220022201262. Its totient is φ = 102220022201260.

The previous prime is 102220022201203. The next prime is 102220022201309. The reversal of 102220022201261 is 162102220022201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80712363808036 + 21507658393225 = 8984006^2 + 4637635^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220022201261 - 2¹⁰ = 102220022200237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220022201201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110011100630 + 51110011100631.

It is an arithmetic number, because the mean of its divisors is an integer number (51110011100631).

Almost surely, 2^{102220022201261} is an apocalyptic number.

It is an amenable number.

102220022201261 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220022201261 is an equidigital number, since it uses as much as digits as its factorization.

102220022201261 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 23.

Adding to 102220022201261 its reverse (162102220022201), we get a palindrome (264322242223462).

The spelling of 102220022201261 in words is "one hundred two trillion, two hundred twenty billion, twenty-two million, two hundred one thousand, two hundred sixty-one".