1012020011191 has 8 divisors (see below), whose sum is σ = 1156620387104. Its totient is φ = 867426157440.

The previous prime is 1012020011183. The next prime is 1012020011213. The reversal of 1012020011191 is 1911100202101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012020011191 - 2³ = 1012020011183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012020311191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293390 + ... + 1922731.

It is an arithmetic number, because the mean of its divisors is an integer number (144577548388).

Almost surely, 2^{1012020011191} is an apocalyptic number.

1012020011191 is a deficient number, since it is larger than the sum of its proper divisors (144600375913).

1012020011191 is an equidigital number, since it uses as much as digits as its factorization.

1012020011191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261081.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 1012020011191 its reverse (1911100202101), we get a palindrome (2923120213292).

The spelling of 1012020011191 in words is "one trillion, twelve billion, twenty million, eleven thousand, one hundred ninety-one".