101121343261 has 2 divisors, whose sum is σ = 101121343262. Its totient is φ = 101121343260.

The previous prime is 101121343229. The next prime is 101121343303. The reversal of 101121343261 is 162343121101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60513048036 + 40608295225 = 245994^2 + 201515^2 .

It is a cyclic number.

It is not a de Polignac number, because 101121343261 - 2⁵ = 101121343229 is a prime.

It is a super-2 number, since 2×101121343261² (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 (101121343361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560671630 + 50560671631.

It is an arithmetic number, because the mean of its divisors is an integer number (50560671631).

Almost surely, 2^101121343261 is an apocalyptic number.

It is an amenable number.

101121343261 is a deficient number, since it is larger than the sum of its proper divisors (1).

101121343261 is an equidigital number, since it uses as much as digits as its factorization.

101121343261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 101121343261 its reverse (162343121101), we get a palindrome (263464464362).

The spelling of 101121343261 in words is "one hundred one billion, one hundred twenty-one million, three hundred forty-three thousand, two hundred sixty-one".