1101221321312 has 48 divisors (see below), whose sum is σ = 2477834624160. Its totient is φ = 471935490048.

The previous prime is 1101221321303. The next prime is 1101221321351. The reversal of 1101221321312 is 2131231221011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8047448 + ... + 8183144.

It is an arithmetic number, because the mean of its divisors is an integer number (51621554670).

Almost surely, 2^{1101221321312} is an apocalyptic number.

It is an amenable number.

1101221321312 is an abundant number, since it is smaller than the sum of its proper divisors (1376613302848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101221321312 is a wasteful number, since it uses less digits than its factorization.

1101221321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171943 (or 171935 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1101221321312 its reverse (2131231221011), we get a palindrome (3232452542323).

The spelling of 1101221321312 in words is "one trillion, one hundred one billion, two hundred twenty-one million, three hundred twenty-one thousand, three hundred twelve".