1231220212333 has 16 divisors (see below), whose sum is σ = 1339232832000. Its totient is φ = 1127607747840.

The previous prime is 1231220212309. The next prime is 1231220212349. The reversal of 1231220212333 is 3332120221321.

It is a cyclic number.

It is not a de Polignac number, because 1231220212333 - 2⁵ = 1231220212301 is a prime.

It is a super-2 number, since 2×1231220212333² (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 = 1231220212298 and 1231220212307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231220212303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535408 + ... + 1658041.

It is an arithmetic number, because the mean of its divisors is an integer number (83702052000).

Almost surely, 2^{1231220212333} is an apocalyptic number.

It is an amenable number.

1231220212333 is a deficient number, since it is larger than the sum of its proper divisors (108012619667).

1231220212333 is a wasteful number, since it uses less digits than its factorization.

1231220212333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194452.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1231220212333 its reverse (3332120221321), we get a palindrome (4563340433654).

The spelling of 1231220212333 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, two hundred twelve thousand, three hundred thirty-three".