1012202052091 has 2 divisors, whose sum is σ = 1012202052092. Its totient is φ = 1012202052090.

The previous prime is 1012202052049. The next prime is 1012202052097. The reversal of 1012202052091 is 1902502022101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012202052091 - 2⁷ = 1012202051963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012202052097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506101026045 + 506101026046.

It is an arithmetic number, because the mean of its divisors is an integer number (506101026046).

Almost surely, 2^{1012202052091} is an apocalyptic number.

1012202052091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012202052091 is an equidigital number, since it uses as much as digits as its factorization.

1012202052091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 1012202052091 its reverse (1902502022101), we get a palindrome (2914704074192).

The spelling of 1012202052091 in words is "one trillion, twelve billion, two hundred two million, fifty-two thousand, ninety-one".