1022101210261 has 2 divisors, whose sum is σ = 1022101210262. Its totient is φ = 1022101210260.

The previous prime is 1022101210199. The next prime is 1022101210297. The reversal of 1022101210261 is 1620121012201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 905295160900 + 116806049361 = 951470^2 + 341769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022101210261 - 2³³ = 1013511275669 is a prime.

It is a super-3 number, since 3×1022101210261³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022101210561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511050605130 + 511050605131.

It is an arithmetic number, because the mean of its divisors is an integer number (511050605131).

Almost surely, 2^{1022101210261} is an apocalyptic number.

It is an amenable number.

1022101210261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022101210261 is an equidigital number, since it uses as much as digits as its factorization.

1022101210261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1022101210261 its reverse (1620121012201), we get a palindrome (2642222222462).

The spelling of 1022101210261 in words is "one trillion, twenty-two billion, one hundred one million, two hundred ten thousand, two hundred sixty-one".