1111211102091 has 8 divisors (see below), whose sum is σ = 1485741864960. Its totient is φ = 738743870312.

The previous prime is 1111211102063. The next prime is 1111211102123. The reversal of 1111211102091 is 1902011121111.

It is a happy number.

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 1111211102091 - 2¹⁴ = 1111211085707 is a prime.

It is a super-2 number, since 2×1111211102091² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111211102041) 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, 515881515 + ... + 515883668.

It is an arithmetic number, because the mean of its divisors is an integer number (185717733120).

Almost surely, 2^{1111211102091} is an apocalyptic number.

1111211102091 is a deficient number, since it is larger than the sum of its proper divisors (374530762869).

1111211102091 is a wasteful number, since it uses less digits than its factorization.

1111211102091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031765545.

The product of its (nonzero) digits is 36, while the sum is 21.

The spelling of 1111211102091 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred two thousand, ninety-one".