11001221111212 has 6 divisors (see below), whose sum is σ = 19252136944628. Its totient is φ = 5500610555604.

The previous prime is 11001221111141. The next prime is 11001221111213. The reversal of 11001221111212 is 21211112210011.

It is not an unprimeable number, because it can be changed into a prime (11001221111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375152638898 + ... + 1375152638905.

Almost surely, 2^{11001221111212} is an apocalyptic number.

It is an amenable number.

11001221111212 is a deficient number, since it is larger than the sum of its proper divisors (8250915833416).

11001221111212 is a wasteful number, since it uses less digits than its factorization.

11001221111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750305277807 (or 2750305277805 counting only the distinct ones).

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

Adding to 11001221111212 its reverse (21211112210011), we get a palindrome (32212333321223).

The spelling of 11001221111212 in words is "eleven trillion, one billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twelve".