1233213221021 has 8 divisors (see below), whose sum is σ = 1244170352640. Its totient is φ = 1222275570768.

The previous prime is 1233213220973. The next prime is 1233213221039. The reversal of 1233213221021 is 1201223123321.

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 1233213221021 - 2⁶ = 1233213220957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233213221321) 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, 4743161 + ... + 4996398.

It is an arithmetic number, because the mean of its divisors is an integer number (155521294080).

Almost surely, 2^{1233213221021} is an apocalyptic number.

It is an amenable number.

1233213221021 is a deficient number, since it is larger than the sum of its proper divisors (10957131619).

1233213221021 is an equidigital number, since it uses as much as digits as its factorization.

1233213221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9740683.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1233213221021 its reverse (1201223123321), we get a palindrome (2434436344342).

The spelling of 1233213221021 in words is "one trillion, two hundred thirty-three billion, two hundred thirteen million, two hundred twenty-one thousand, twenty-one".