1331022220123 has 4 divisors (see below), whose sum is σ = 1344200658048. Its totient is φ = 1317843782200.

The previous prime is 1331022220109. The next prime is 1331022220147. The reversal of 1331022220123 is 3210222201331.

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 1331022220123 - 2²⁹ = 1330485349211 is a prime.

It is a super-2 number, since 2×1331022220123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331022220094 and 1331022220103.

It is not an unprimeable number, because it can be changed into a prime (1331022220183) 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, 6589218811 + ... + 6589219012.

It is an arithmetic number, because the mean of its divisors is an integer number (336050164512).

Almost surely, 2^{1331022220123} is an apocalyptic number.

1331022220123 is a deficient number, since it is larger than the sum of its proper divisors (13178437925).

1331022220123 is a wasteful number, since it uses less digits than its factorization.

1331022220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178437924.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1331022220123 its reverse (3210222201331), we get a palindrome (4541244421454).

The spelling of 1331022220123 in words is "one trillion, three hundred thirty-one billion, twenty-two million, two hundred twenty thousand, one hundred twenty-three".