1012122101091 has 16 divisors (see below), whose sum is σ = 1361104358400. Its totient is φ = 668968090560.

The previous prime is 1012122101087. The next prime is 1012122101167. The reversal of 1012122101091 is 1901012212101.

It is not a de Polignac number, because 1012122101091 - 2² = 1012122101087 is a prime.

It is a super-2 number, since 2×1012122101091² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012122801091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2848875 + ... + 3184388.

It is an arithmetic number, because the mean of its divisors is an integer number (85069022400).

Almost surely, 2^{1012122101091} is an apocalyptic number.

1012122101091 is a deficient number, since it is larger than the sum of its proper divisors (348982257309).

1012122101091 is a wasteful number, since it uses less digits than its factorization.

1012122101091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033746.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 1012122101091 its reverse (1901012212101), we get a palindrome (2913134313192).

The spelling of 1012122101091 in words is "one trillion, twelve billion, one hundred twenty-two million, one hundred one thousand, ninety-one".