1220123131333 has 8 divisors (see below), whose sum is σ = 1231666560000. Its totient is φ = 1208582303040.

The previous prime is 1220123131313. The next prime is 1220123131361. The reversal of 1220123131333 is 3331313210221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220123131333 is a prime.

It is a super-2 number, since 2×1220123131333² (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 = 1220123131298 and 1220123131307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220123131313) 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, 299293 + ... + 1590541.

It is an arithmetic number, because the mean of its divisors is an integer number (153958320000).

Almost surely, 2^{1220123131333} is an apocalyptic number.

It is an amenable number.

1220123131333 is a deficient number, since it is larger than the sum of its proper divisors (11543428667).

1220123131333 is a wasteful number, since it uses less digits than its factorization.

1220123131333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300187.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1220123131333 its reverse (3331313210221), we get a palindrome (4551436341554).

The spelling of 1220123131333 in words is "one trillion, two hundred twenty billion, one hundred twenty-three million, one hundred thirty-one thousand, three hundred thirty-three".