12102021122 has 4 divisors (see below), whose sum is σ = 18153031686. Its totient is φ = 6051010560.

The previous prime is 12102021073. The next prime is 12102021131. The reversal of 12102021122 is 22112020121.

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

It can be written as a sum of positive squares in only one way, i.e., 10444635601 + 1657385521 = 102199^2 + 40711^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12102021097 and 12102021106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025505279 + ... + 3025505282.

Almost surely, 2^12102021122 is an apocalyptic number.

12102021122 is a deficient number, since it is larger than the sum of its proper divisors (6051010564).

12102021122 is an equidigital number, since it uses as much as digits as its factorization.

12102021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051010563.

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

Adding to 12102021122 its reverse (22112020121), we get a palindrome (34214041243).

The spelling of 12102021122 in words is "twelve billion, one hundred two million, twenty-one thousand, one hundred twenty-two".