12211120012 has 36 divisors (see below), whose sum is σ = 26445394416. Its totient is φ = 4830770880.

The previous prime is 12211119967. The next prime is 12211120021. The reversal of 12211120012 is 21002111221.

It is a super-2 number, since 2×12211120012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 12211119974 and 12211120001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1285539 + ... + 1295002.

Almost surely, 2^12211120012 is an apocalyptic number.

It is an amenable number.

12211120012 is an abundant number, since it is smaller than the sum of its proper divisors (14234274404).

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

12211120012 is a wasteful number, since it uses less digits than its factorization.

12211120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580578 (or 2580563 counting only the distinct ones).

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

Adding to 12211120012 its reverse (21002111221), we get a palindrome (33213231233).

The spelling of 12211120012 in words is "twelve billion, two hundred eleven million, one hundred twenty thousand, twelve".