102201340261 has 2 divisors, whose sum is σ = 102201340262. Its totient is φ = 102201340260.

The previous prime is 102201340243. The next prime is 102201340337. The reversal of 102201340261 is 162043102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88279700161 + 13921640100 = 297119^2 + 117990^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201340261 - 2¹⁷ = 102201209189 is a prime.

It is a super-2 number, since 2×102201340261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201341261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100670130 + 51100670131.

It is an arithmetic number, because the mean of its divisors is an integer number (51100670131).

Almost surely, 2^102201340261 is an apocalyptic number.

It is an amenable number.

102201340261 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201340261 is an equidigital number, since it uses as much as digits as its factorization.

102201340261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 102201340261 its reverse (162043102201), we get a palindrome (264244442462).

The spelling of 102201340261 in words is "one hundred two billion, two hundred one million, three hundred forty thousand, two hundred sixty-one".