12252021122 has 32 divisors (see below), whose sum is σ = 20603130624. Its totient is φ = 5415292800.

The previous prime is 12252021109. The next prime is 12252021157. The reversal of 12252021122 is 22112025221.

It is a super-2 number, since 2×12252021122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12252021094 and 12252021103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749047 + ... + 1756037.

It is an arithmetic number, because the mean of its divisors is an integer number (643847832).

Almost surely, 2^12252021122 is an apocalyptic number.

12252021122 is a deficient number, since it is larger than the sum of its proper divisors (8351109502).

12252021122 is a wasteful number, since it uses less digits than its factorization.

12252021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 12252021122 its reverse (22112025221), we get a palindrome (34364046343).

The spelling of 12252021122 in words is "twelve billion, two hundred fifty-two million, twenty-one thousand, one hundred twenty-two".