11222121113031 has 4 divisors (see below), whose sum is σ = 14962828150712. Its totient is φ = 7481414075352.

The previous prime is 11222121112919. The next prime is 11222121113041. The reversal of 11222121113031 is 13031112122211.

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

It is not a de Polignac number, because 11222121113031 - 2¹⁹ = 11222120588743 is a prime.

It is a super-2 number, since 2×11222121113031² (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 = 11222121112989 and 11222121113007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222121113041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870353518836 + ... + 1870353518841.

It is an arithmetic number, because the mean of its divisors is an integer number (3740707037678).

Almost surely, 2^{11222121113031} is an apocalyptic number.

11222121113031 is a deficient number, since it is larger than the sum of its proper divisors (3740707037681).

11222121113031 is an equidigital number, since it uses as much as digits as its factorization.

11222121113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740707037680.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 11222121113031 its reverse (13031112122211), we get a palindrome (24253233235242).

The spelling of 11222121113031 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred thirteen thousand, thirty-one".