11221201111212 has 30 divisors (see below), whose sum is σ = 29334436239108. Its totient is φ = 3740400370296.

The previous prime is 11221201111151. The next prime is 11221201111229. The reversal of 11221201111212 is 21211110212211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17316668058 + ... + 17316668705.

Almost surely, 2^{11221201111212} is an apocalyptic number.

11221201111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11221201111212 is an abundant number, since it is smaller than the sum of its proper divisors (18113235127896).

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

11221201111212 is a wasteful number, since it uses less digits than its factorization.

11221201111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34633336779 (or 34633336768 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11221201111212 its reverse (21211110212211), we get a palindrome (32432311323423).

The spelling of 11221201111212 in words is "eleven trillion, two hundred twenty-one billion, two hundred one million, one hundred eleven thousand, two hundred twelve".