11122101001 has 4 divisors (see below), whose sum is σ = 12133201104. Its totient is φ = 10111000900.

The previous prime is 11122100971. The next prime is 11122101013. The reversal of 11122101001 is 10010122111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10010122111 = 11 ⋅910011101.

It is not a de Polignac number, because 11122101001 - 2³³ = 2532166409 is a prime.

It is a super-2 number, since 2×11122101001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122101061) 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, 505550035 + ... + 505550056.

It is an arithmetic number, because the mean of its divisors is an integer number (3033300276).

Almost surely, 2^11122101001 is an apocalyptic number.

11122101001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122101001 is a deficient number, since it is larger than the sum of its proper divisors (1011100103).

11122101001 is a wasteful number, since it uses less digits than its factorization.

11122101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011100102.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11122101001 its reverse (10010122111), we get a palindrome (21132223112).

The spelling of 11122101001 in words is "eleven billion, one hundred twenty-two million, one hundred one thousand, one".