1231222022123 has 8 divisors (see below), whose sum is σ = 1254527211600. Its totient is φ = 1207919595168.

The previous prime is 1231222022119. The next prime is 1231222022143. The reversal of 1231222022123 is 3212202221321.

It is a happy number.

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 1231222022123 - 2² = 1231222022119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231222022143) 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, 220448 + ... + 1584626.

It is an arithmetic number, because the mean of its divisors is an integer number (156815901450).

Almost surely, 2^{1231222022123} is an apocalyptic number.

1231222022123 is a deficient number, since it is larger than the sum of its proper divisors (23305189477).

1231222022123 is a wasteful number, since it uses less digits than its factorization.

1231222022123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381261.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1231222022123 its reverse (3212202221321), we get a palindrome (4443424243444).

The spelling of 1231222022123 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-three".