11402111091 has 16 divisors (see below), whose sum is σ = 17378302464. Its totient is φ = 6514120704.

The previous prime is 11402111081. The next prime is 11402111093. The reversal of 11402111091 is 19011120411.

It is not a de Polignac number, because 11402111091 - 2⁵ = 11402111059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11402111093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49651 + ... + 158963.

It is an arithmetic number, because the mean of its divisors is an integer number (1086143904).

Almost surely, 2^11402111091 is an apocalyptic number.

11402111091 is a deficient number, since it is larger than the sum of its proper divisors (5976191373).

11402111091 is a wasteful number, since it uses less digits than its factorization.

11402111091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114290.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 11402111091 in words is "eleven billion, four hundred two million, one hundred eleven thousand, ninety-one".