1101221201212 has 48 divisors (see below), whose sum is σ = 2107578211200. Its totient is φ = 499307146560.

The previous prime is 1101221201209. The next prime is 1101221201221. The reversal of 1101221201212 is 2121021221011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36127114 + ... + 36157582.

It is an arithmetic number, because the mean of its divisors is an integer number (43907879400).

Almost surely, 2^{1101221201212} is an apocalyptic number.

It is an amenable number.

1101221201212 is a deficient number, since it is larger than the sum of its proper divisors (1006357009988).

1101221201212 is a wasteful number, since it uses less digits than its factorization.

1101221201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32506 (or 32504 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1101221201212 its reverse (2121021221011), we get a palindrome (3222242422223).

The spelling of 1101221201212 in words is "one trillion, one hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred twelve".