123022201331 has 4 divisors (see below), whose sum is σ = 124754908464. Its totient is φ = 121289494200.

The previous prime is 123022201321. The next prime is 123022201333. The reversal of 123022201331 is 133102220321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123022201331 is a prime.

It is a super-2 number, since 2×123022201331² (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 (123022201333) 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, 866353460 + ... + 866353601.

It is an arithmetic number, because the mean of its divisors is an integer number (31188727116).

Almost surely, 2^123022201331 is an apocalyptic number.

123022201331 is a deficient number, since it is larger than the sum of its proper divisors (1732707133).

123022201331 is an equidigital number, since it uses as much as digits as its factorization.

123022201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732707132.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123022201331 its reverse (133102220321), we get a palindrome (256124421652).

The spelling of 123022201331 in words is "one hundred twenty-three billion, twenty-two million, two hundred one thousand, three hundred thirty-one".