1090199020901 has 4 divisors (see below), whose sum is σ = 1090210761804. Its totient is φ = 1090187280000.

The previous prime is 1090199020871. The next prime is 1090199020909. The reversal of 1090199020901 is 1090209910901.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 887365884001 + 202833136900 = 942001^2 + 450370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1090199020901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090199020909) 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, 5730050 + ... + 5917251.

It is an arithmetic number, because the mean of its divisors is an integer number (272552690451).

Almost surely, 2^{1090199020901} is an apocalyptic number.

It is an amenable number.

1090199020901 is a deficient number, since it is larger than the sum of its proper divisors (11740903).

1090199020901 is an equidigital number, since it uses as much as digits as its factorization.

1090199020901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11740902.

The product of its (nonzero) digits is 13122, while the sum is 41.

Subtracting 1090199020901 from its reverse (1090209910901), we obtain a square (10890000 = 3300²).

The spelling of 1090199020901 in words is "one trillion, ninety billion, one hundred ninety-nine million, twenty thousand, nine hundred one".