1232020013261 has 2 divisors, whose sum is σ = 1232020013262. Its totient is φ = 1232020013260.

The previous prime is 1232020013219. The next prime is 1232020013327. The reversal of 1232020013261 is 1623100202321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 914481001225 + 317539012036 = 956285^2 + 563506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232020013261 - 2³⁸ = 957142106317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232020010261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616010006630 + 616010006631.

It is an arithmetic number, because the mean of its divisors is an integer number (616010006631).

Almost surely, 2^{1232020013261} is an apocalyptic number.

It is an amenable number.

1232020013261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232020013261 is an equidigital number, since it uses as much as digits as its factorization.

1232020013261 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 23.

Adding to 1232020013261 its reverse (1623100202321), we get a palindrome (2855120215582).

The spelling of 1232020013261 in words is "one trillion, two hundred thirty-two billion, twenty million, thirteen thousand, two hundred sixty-one".