220001223131 has 8 divisors (see below), whose sum is σ = 225390047904. Its totient is φ = 214613490880.

The previous prime is 220001223121. The next prime is 220001223149. The reversal of 220001223131 is 131322100022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220001223131 - 2⁶ = 220001223067 is a prime.

It is a super-2 number, since 2×220001223131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001223121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142181 + ... + 678393.

It is an arithmetic number, because the mean of its divisors is an integer number (28173755988).

Almost surely, 2^220001223131 is an apocalyptic number.

220001223131 is a deficient number, since it is larger than the sum of its proper divisors (5388824773).

220001223131 is a wasteful number, since it uses less digits than its factorization.

220001223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546261.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 220001223131 its reverse (131322100022), we get a palindrome (351323323153).

The spelling of 220001223131 in words is "two hundred twenty billion, one million, two hundred twenty-three thousand, one hundred thirty-one".