12121210022 has 4 divisors (see below), whose sum is σ = 18181815036. Its totient is φ = 6060605010.

The previous prime is 12121210009. The next prime is 12121210039. The reversal of 12121210022 is 22001212121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12121209979 and 12121210006.

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, 3030302504 + ... + 3030302507.

It is an arithmetic number, because the mean of its divisors is an integer number (4545453759).

Almost surely, 2^12121210022 is an apocalyptic number.

12121210022 is a deficient number, since it is larger than the sum of its proper divisors (6060605014).

12121210022 is an equidigital number, since it uses as much as digits as its factorization.

12121210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060605013.

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

Adding to 12121210022 its reverse (22001212121), we get a palindrome (34122422143).

The spelling of 12121210022 in words is "twelve billion, one hundred twenty-one million, two hundred ten thousand, twenty-two".