11220001111212 has 24 divisors (see below), whose sum is σ = 26887570231536. Its totient is φ = 3638919279168.

The previous prime is 11220001111211. The next prime is 11220001111229. The reversal of 11220001111212 is 21211110002211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11220001111191 and 11220001111200.

It is not an unprimeable number, because it can be changed into a prime (11220001111211) 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, 12635135943 + ... + 12635136830.

It is an arithmetic number, because the mean of its divisors is an integer number (1120315426314).

Almost surely, 2^{11220001111212} is an apocalyptic number.

11220001111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220001111212 is an abundant number, since it is smaller than the sum of its proper divisors (15667569120324).

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

11220001111212 is a wasteful number, since it uses less digits than its factorization.

11220001111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25270272817 (or 25270272815 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11220001111212 its reverse (21211110002211), we get a palindrome (32431111113423).

The spelling of 11220001111212 in words is "eleven trillion, two hundred twenty billion, one million, one hundred eleven thousand, two hundred twelve".