12120021122 has 16 divisors (see below), whose sum is σ = 19844138592. Its totient is φ = 5505940320.

The previous prime is 12120021107. The next prime is 12120021161. The reversal of 12120021122 is 22112002121.

It is a super-2 number, since 2×12120021122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12120021097 and 12120021106.

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, 118568 + ... + 195699.

It is an arithmetic number, because the mean of its divisors is an integer number (1240258662).

Almost surely, 2^12120021122 is an apocalyptic number.

12120021122 is a deficient number, since it is larger than the sum of its proper divisors (7724117470).

12120021122 is a wasteful number, since it uses less digits than its factorization.

12120021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316033.

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

Adding to 12120021122 its reverse (22112002121), we get a palindrome (34232023243).

The spelling of 12120021122 in words is "twelve billion, one hundred twenty million, twenty-one thousand, one hundred twenty-two".