1233313121221 has 8 divisors (see below), whose sum is σ = 1241203824000. Its totient is φ = 1225426374432.

The previous prime is 1233313121219. The next prime is 1233313121231. The reversal of 1233313121221 is 1221213133321.

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 1233313121221 - 2¹ = 1233313121219 is a prime.

It is a super-2 number, since 2×1233313121221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233313121231) 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, 362221 + ... + 1611778.

It is an arithmetic number, because the mean of its divisors is an integer number (155150478000).

Almost surely, 2^{1233313121221} is an apocalyptic number.

It is an amenable number.

1233313121221 is a deficient number, since it is larger than the sum of its proper divisors (7890702779).

1233313121221 is a wasteful number, since it uses less digits than its factorization.

1233313121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977995.

The product of its digits is 1296, while the sum is 25.

Adding to 1233313121221 its reverse (1221213133321), we get a palindrome (2454526254542).

The spelling of 1233313121221 in words is "one trillion, two hundred thirty-three billion, three hundred thirteen million, one hundred twenty-one thousand, two hundred twenty-one".