1012022121091 has 2 divisors, whose sum is σ = 1012022121092. Its totient is φ = 1012022121090.

The previous prime is 1012022121083. The next prime is 1012022121127. The reversal of 1012022121091 is 1901212202101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012022121091 - 2³ = 1012022121083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012022121491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506011060545 + 506011060546.

It is an arithmetic number, because the mean of its divisors is an integer number (506011060546).

Almost surely, 2^{1012022121091} is an apocalyptic number.

1012022121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012022121091 is an equidigital number, since it uses as much as digits as its factorization.

1012022121091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 1012022121091 its reverse (1901212202101), we get a palindrome (2913234323192).

The spelling of 1012022121091 in words is "one trillion, twelve billion, twenty-two million, one hundred twenty-one thousand, ninety-one".