12121012022 has 16 divisors (see below), whose sum is σ = 20872061952. Its totient is φ = 5171423400.

The previous prime is 12121011989. The next prime is 12121012037. The reversal of 12121012022 is 22021012121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12121011988 and 12121012006.

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, 1938104 + ... + 1944347.

It is an arithmetic number, because the mean of its divisors is an integer number (1304503872).

Almost surely, 2^12121012022 is an apocalyptic number.

12121012022 is a deficient number, since it is larger than the sum of its proper divisors (8751049930).

12121012022 is a wasteful number, since it uses less digits than its factorization.

12121012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882683.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121012022 its reverse (22021012121), we get a palindrome (34142024143).

Subtracting 12121012022 from its reverse (22021012121), we obtain a palindrome (9900000099).

The spelling of 12121012022 in words is "twelve billion, one hundred twenty-one million, twelve thousand, twenty-two".