22111000001212 has 6 divisors (see below), whose sum is σ = 38694250002128. Its totient is φ = 11055500000604.

The previous prime is 22111000001183. The next prime is 22111000001213. The reversal of 22111000001212 is 21210000011122.

It is a junction number, because it is equal to n+sod(n) for n = 22111000001192 and 22111000001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111000001213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2763875000148 + ... + 2763875000155.

Almost surely, 2^{22111000001212} is an apocalyptic number.

It is an amenable number.

22111000001212 is a deficient number, since it is larger than the sum of its proper divisors (16583250000916).

22111000001212 is a wasteful number, since it uses less digits than its factorization.

22111000001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527750000307 (or 5527750000305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22111000001212 its reverse (21210000011122), we get a palindrome (43321000012334).

The spelling of 22111000001212 in words is "twenty-two trillion, one hundred eleven billion, one thousand, two hundred twelve".