12111212022 has 64 divisors (see below), whose sum is σ = 30220700160. Its totient is φ = 3150399744.

The previous prime is 12111211951. The next prime is 12111212093. The reversal of 12111212022 is 22021211121.

It is an interprime number because it is at equal distance from previous prime (12111211951) and next prime (12111212093).

It is a junction number, because it is equal to n+sod(n) for n = 12111211992 and 12111212010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112072 + ... + 191787.

It is an arithmetic number, because the mean of its divisors is an integer number (472198440).

Almost surely, 2^12111212022 is an apocalyptic number.

12111212022 is an abundant number, since it is smaller than the sum of its proper divisors (18109488138).

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

12111212022 is a wasteful number, since it uses less digits than its factorization.

12111212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303957.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12111212022 its reverse (22021211121), we get a palindrome (34132423143).

Subtracting 12111212022 from its reverse (22021211121), we obtain a palindrome (9909999099).

The spelling of 12111212022 in words is "twelve billion, one hundred eleven million, two hundred twelve thousand, twenty-two".