12121022 has 4 divisors (see below), whose sum is σ = 18181536. Its totient is φ = 6060510.

The previous prime is 12121009. The next prime is 12121061. The reversal of 12121022 is 22012121.

It is a happy number.

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 = 12120994 and 12121012.

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, 3030254 + ... + 3030257.

It is an arithmetic number, because the mean of its divisors is an integer number (4545384).

Almost surely, 2^12121022 is an apocalyptic number.

12121022 is a deficient number, since it is larger than the sum of its proper divisors (6060514).

12121022 is an equidigital number, since it uses as much as digits as its factorization.

12121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060513.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12121022 is about 3481.5258149266. The cubic root of 12121022 is about 229.7099178483.

Adding to 12121022 its reverse (22012121), we get a palindrome (34133143).

The spelling of 12121022 in words is "twelve million, one hundred twenty-one thousand, twenty-two".