11220022131 has 4 divisors (see below), whose sum is σ = 14960029512. Its totient is φ = 7480014752.

The previous prime is 11220022111. The next prime is 11220022141. The reversal of 11220022131 is 13122002211.

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

It is a cyclic number.

It is not a de Polignac number, because 11220022131 - 2⁹ = 11220021619 is a prime.

It is a super-2 number, since 2×11220022131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11220022131.

It is not an unprimeable number, because it can be changed into a prime (11220022111) 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, 1870003686 + ... + 1870003691.

It is an arithmetic number, because the mean of its divisors is an integer number (3740007378).

Almost surely, 2^11220022131 is an apocalyptic number.

11220022131 is a deficient number, since it is larger than the sum of its proper divisors (3740007381).

11220022131 is an equidigital number, since it uses as much as digits as its factorization.

11220022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740007380.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11220022131 its reverse (13122002211), we get a palindrome (24342024342).

The spelling of 11220022131 in words is "eleven billion, two hundred twenty million, twenty-two thousand, one hundred thirty-one".