1233213412421 has 8 divisors (see below), whose sum is σ = 1260671263104. Its totient is φ = 1205806364640.

The previous prime is 1233213412397. The next prime is 1233213412447. The reversal of 1233213412421 is 1242143123321.

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 1233213412421 - 2⁶ = 1233213412357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233213414421) 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, 12651635 + ... + 12748736.

It is an arithmetic number, because the mean of its divisors is an integer number (157583907888).

Almost surely, 2^{1233213412421} is an apocalyptic number.

It is an amenable number.

1233213412421 is a deficient number, since it is larger than the sum of its proper divisors (27457850683).

1233213412421 is a wasteful number, since it uses less digits than its factorization.

1233213412421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25401451.

The product of its digits is 6912, while the sum is 29.

Adding to 1233213412421 its reverse (1242143123321), we get a palindrome (2475356535742).

The spelling of 1233213412421 in words is "one trillion, two hundred thirty-three billion, two hundred thirteen million, four hundred twelve thousand, four hundred twenty-one".