22420020131 has 4 divisors (see below), whose sum is σ = 22941415992. Its totient is φ = 21898624272.

The previous prime is 22420020127. The next prime is 22420020143. The reversal of 22420020131 is 13102002422.

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 22420020131 - 2² = 22420020127 is a prime.

It is a super-2 number, since 2×22420020131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22420026131) 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, 260697866 + ... + 260697951.

It is an arithmetic number, because the mean of its divisors is an integer number (5735353998).

Almost surely, 2^22420020131 is an apocalyptic number.

22420020131 is a deficient number, since it is larger than the sum of its proper divisors (521395861).

22420020131 is an equidigital number, since it uses as much as digits as its factorization.

22420020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521395860.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22420020131 its reverse (13102002422), we get a palindrome (35522022553).

The spelling of 22420020131 in words is "twenty-two billion, four hundred twenty million, twenty thousand, one hundred thirty-one".