12121311022 has 16 divisors (see below), whose sum is σ = 19584005760. Its totient is φ = 5608145592.

The previous prime is 12121310969. The next prime is 12121311113. The reversal of 12121311022 is 22011312121.

It is a junction number, because it is equal to n+sod(n) for n = 12121310987 and 12121311005.

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, 3707458 + ... + 3710725.

It is an arithmetic number, because the mean of its divisors is an integer number (1224000360).

Almost surely, 2^12121311022 is an apocalyptic number.

12121311022 is a deficient number, since it is larger than the sum of its proper divisors (7462694738).

12121311022 is a wasteful number, since it uses less digits than its factorization.

12121311022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418247.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12121311022 its reverse (22011312121), we get a palindrome (34132623143).

The spelling of 12121311022 in words is "twelve billion, one hundred twenty-one million, three hundred eleven thousand, twenty-two".