1221223023433 has 16 divisors (see below), whose sum is σ = 1413850112640. Its totient is φ = 1033224662016.

The previous prime is 1221223023421. The next prime is 1221223023443. The reversal of 1221223023433 is 3343203221221.

It is a cyclic number.

It is not a de Polignac number, because 1221223023433 - 2²⁵ = 1221189469001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221223023413) 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, 3459160 + ... + 3795817.

It is an arithmetic number, because the mean of its divisors is an integer number (88365632040).

Almost surely, 2^{1221223023433} is an apocalyptic number.

It is an amenable number.

1221223023433 is a deficient number, since it is larger than the sum of its proper divisors (192627089207).

1221223023433 is a wasteful number, since it uses less digits than its factorization.

1221223023433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7255296.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1221223023433 its reverse (3343203221221), we get a palindrome (4564426244654).

The spelling of 1221223023433 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-three million, twenty-three thousand, four hundred thirty-three".