1012100122091 has 4 divisors (see below), whose sum is σ = 1018160602032. Its totient is φ = 1006039642152.

The previous prime is 1012100122051. The next prime is 1012100122123. The reversal of 1012100122091 is 1902210012101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012100122091 - 2⁶ = 1012100122027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012100122051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030239720 + ... + 3030240053.

It is an arithmetic number, because the mean of its divisors is an integer number (254540150508).

Almost surely, 2^{1012100122091} is an apocalyptic number.

1012100122091 is a deficient number, since it is larger than the sum of its proper divisors (6060479941).

1012100122091 is an equidigital number, since it uses as much as digits as its factorization.

1012100122091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060479940.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 1012100122091 its reverse (1902210012101), we get a palindrome (2914310134192).

The spelling of 1012100122091 in words is "one trillion, twelve billion, one hundred million, one hundred twenty-two thousand, ninety-one".