1061219582261 has 2 divisors, whose sum is σ = 1061219582262. Its totient is φ = 1061219582260.

The previous prime is 1061219582207. The next prime is 1061219582299. The reversal of 1061219582261 is 1622859121601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 785694323236 + 275525259025 = 886394^2 + 524905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061219582261 - 2¹⁰ = 1061219581237 is a prime.

It is a super-2 number, since 2×1061219582261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061219582201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530609791130 + 530609791131.

It is an arithmetic number, because the mean of its divisors is an integer number (530609791131).

Almost surely, 2^{1061219582261} is an apocalyptic number.

It is an amenable number.

1061219582261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061219582261 is an equidigital number, since it uses as much as digits as its factorization.

1061219582261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 1061219582261 in words is "one trillion, sixty-one billion, two hundred nineteen million, five hundred eighty-two thousand, two hundred sixty-one".