1103212231221 has 8 divisors (see below), whose sum is σ = 1470955014720. Its totient is φ = 735472134272.

The previous prime is 1103212231171. The next prime is 1103212231223. The reversal of 1103212231221 is 1221322123011.

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 1103212231221 - 2¹⁴ = 1103212214837 is a prime.

It is a super-3 number, since 3×1103212231221³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103212231223) 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, 668581 + ... + 1628933.

It is an arithmetic number, because the mean of its divisors is an integer number (183869376840).

Almost surely, 2^{1103212231221} is an apocalyptic number.

It is an amenable number.

1103212231221 is a deficient number, since it is larger than the sum of its proper divisors (367742783499).

1103212231221 is an equidigital number, since it uses as much as digits as its factorization.

1103212231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343275.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1103212231221 its reverse (1221322123011), we get a palindrome (2324534354232).

The spelling of 1103212231221 in words is "one trillion, one hundred three billion, two hundred twelve million, two hundred thirty-one thousand, two hundred twenty-one".