9672221131 has 2 divisors, whose sum is σ = 9672221132. Its totient is φ = 9672221130.

The previous prime is 9672221087. The next prime is 9672221197. The reversal of 9672221131 is 1311222769.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9672221131 - 2⁷ = 9672221003 is a prime.

It is a super-2 number, since 2×9672221131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9672228131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4836110565 + 4836110566.

It is an arithmetic number, because the mean of its divisors is an integer number (4836110566).

Almost surely, 2^9672221131 is an apocalyptic number.

9672221131 is a deficient number, since it is larger than the sum of its proper divisors (1).

9672221131 is an equidigital number, since it uses as much as digits as its factorization.

9672221131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 9672221131 is about 98347.4510650886. The cubic root of 9672221131 is about 2130.6334403653.

The spelling of 9672221131 in words is "nine billion, six hundred seventy-two million, two hundred twenty-one thousand, one hundred thirty-one".