11222121112031 has 4 divisors (see below), whose sum is σ = 11222369868864. Its totient is φ = 11221872355200.

The previous prime is 11222121112021. The next prime is 11222121112079. The reversal of 11222121112031 is 13021112122211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222121112031 is a prime.

It is a super-2 number, since 2×11222121112031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222121111994 and 11222121112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222121112021) 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, 124310735 + ... + 124400976.

It is an arithmetic number, because the mean of its divisors is an integer number (2805592467216).

Almost surely, 2^{11222121112031} is an apocalyptic number.

11222121112031 is a deficient number, since it is larger than the sum of its proper divisors (248756833).

11222121112031 is an equidigital number, since it uses as much as digits as its factorization.

11222121112031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248756832.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 11222121112031 its reverse (13021112122211), we get a palindrome (24243233234242).

The spelling of 11222121112031 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, thirty-one".