22001111101212 has 24 divisors (see below), whose sum is σ = 51395688355200. Its totient is φ = 7325166207216.

The previous prime is 22001111101183. The next prime is 22001111101223. The reversal of 22001111101212 is 21210111110022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22001111101191 and 22001111101200.

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, 1067175912 + ... + 1067196527.

It is an arithmetic number, because the mean of its divisors is an integer number (2141487014800).

Almost surely, 2^{22001111101212} is an apocalyptic number.

It is an amenable number.

22001111101212 is an abundant number, since it is smaller than the sum of its proper divisors (29394577253988).

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

22001111101212 is a wasteful number, since it uses less digits than its factorization.

22001111101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134373305 (or 2134373303 counting only the distinct ones).

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

Adding to 22001111101212 its reverse (21210111110022), we get a palindrome (43211222211234).

The spelling of 22001111101212 in words is "twenty-two trillion, one billion, one hundred eleven million, one hundred one thousand, two hundred twelve".