11220031121 has 8 divisors (see below), whose sum is σ = 12287909760. Its totient is φ = 10181409552.

The previous prime is 11220031073. The next prime is 11220031139. The reversal of 11220031121 is 12113002211.

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 11220031121 - 2²⁶ = 11152922257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220031096 and 11220031105.

It is not an unprimeable number, because it can be changed into a prime (11220031171) 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, 7313465 + ... + 7314998.

It is an arithmetic number, because the mean of its divisors is an integer number (1535988720).

Almost surely, 2^11220031121 is an apocalyptic number.

It is an amenable number.

11220031121 is a deficient number, since it is larger than the sum of its proper divisors (1067878639).

11220031121 is a wasteful number, since it uses less digits than its factorization.

11220031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14628535.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11220031121 its reverse (12113002211), we get a palindrome (23333033332).

The spelling of 11220031121 in words is "eleven billion, two hundred twenty million, thirty-one thousand, one hundred twenty-one".