12120222021 has 16 divisors (see below), whose sum is σ = 16419414528. Its totient is φ = 7951590000.

The previous prime is 12120222019. The next prime is 12120222041. The reversal of 12120222021 is 12022202121.

It is not a de Polignac number, because 12120222021 - 2¹ = 12120222019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120222041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76555 + ... + 173496.

It is an arithmetic number, because the mean of its divisors is an integer number (1026213408).

Almost surely, 2^12120222021 is an apocalyptic number.

It is an amenable number.

12120222021 is a deficient number, since it is larger than the sum of its proper divisors (4299192507).

12120222021 is a wasteful number, since it uses less digits than its factorization.

12120222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250312.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12120222021 its reverse (12022202121), we get a palindrome (24142424142).

The spelling of 12120222021 in words is "twelve billion, one hundred twenty million, two hundred twenty-two thousand, twenty-one".