11222420031 has 12 divisors (see below), whose sum is σ = 16484911560. Its totient is φ = 7354806000.

The previous prime is 11222419997. The next prime is 11222420051. The reversal of 11222420031 is 13002422211.

It is a happy number.

It is not a de Polignac number, because 11222420031 - 2⁹ = 11222419519 is a prime.

It is a super-2 number, since 2×11222420031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11222419986 and 11222420013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222420051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10566720 + ... + 10567781.

It is an arithmetic number, because the mean of its divisors is an integer number (1373742630).

Almost surely, 2^11222420031 is an apocalyptic number.

11222420031 is a deficient number, since it is larger than the sum of its proper divisors (5262491529).

11222420031 is a wasteful number, since it uses less digits than its factorization.

11222420031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21134566 (or 21134563 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11222420031 its reverse (13002422211), we get a palindrome (24224842242).

The spelling of 11222420031 in words is "eleven billion, two hundred twenty-two million, four hundred twenty thousand, thirty-one".