12102120022 has 4 divisors (see below), whose sum is σ = 18153180036. Its totient is φ = 6051060010.

The previous prime is 12102119983. The next prime is 12102120049. The reversal of 12102120022 is 22002120121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12102120022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102119984 and 12102120011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025530004 + ... + 3025530007.

It is an arithmetic number, because the mean of its divisors is an integer number (4538295009).

Almost surely, 2^12102120022 is an apocalyptic number.

12102120022 is a deficient number, since it is larger than the sum of its proper divisors (6051060014).

12102120022 is an equidigital number, since it uses as much as digits as its factorization.

12102120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051060013.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12102120022 its reverse (22002120121), we get a palindrome (34104240143).

Subtracting 12102120022 from its reverse (22002120121), we obtain a palindrome (9900000099).

The spelling of 12102120022 in words is "twelve billion, one hundred two million, one hundred twenty thousand, twenty-two".