1091002001111 has 32 divisors (see below), whose sum is σ = 1245513024000. Its totient is φ = 946538320000.

The previous prime is 1091002001093. The next prime is 1091002001113. The reversal of 1091002001111 is 1111002001901.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091002001111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091002001111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091002001113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19270916 + ... + 19327446.

It is an arithmetic number, because the mean of its divisors is an integer number (38922282000).

Almost surely, 2^{1091002001111} is an apocalyptic number.

1091002001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1091002001111 is a deficient number, since it is larger than the sum of its proper divisors (154511022889).

1091002001111 is a wasteful number, since it uses less digits than its factorization.

1091002001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57271.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 1091002001111 in words is "one trillion, ninety-one billion, two million, one thousand, one hundred eleven".