11402111111 has 4 divisors (see below), whose sum is σ = 11680211424. Its totient is φ = 11124010800.

The previous prime is 11402111101. The next prime is 11402111117. The reversal of 11402111111 is 11111120411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11402111111 - 2¹⁰ = 11402110087 is a prime.

It is a Duffinian number.

11402111111 is a modest number, since divided by 111111 gives 11402 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402111117) 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, 139050095 + ... + 139050176.

It is an arithmetic number, because the mean of its divisors is an integer number (2920052856).

Almost surely, 2^11402111111 is an apocalyptic number.

11402111111 is a deficient number, since it is larger than the sum of its proper divisors (278100313).

11402111111 is an equidigital number, since it uses as much as digits as its factorization.

11402111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278100312.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11402111111 its reverse (11111120411), we get a palindrome (22513231522).

The spelling of 11402111111 in words is "eleven billion, four hundred two million, one hundred eleven thousand, one hundred eleven".