22512304427 has 4 divisors (see below), whose sum is σ = 22718839440. Its totient is φ = 22305769416.

The previous prime is 22512304351. The next prime is 22512304453. The reversal of 22512304427 is 72440321522.

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

It is a cyclic number.

It is not a de Polignac number, because 22512304427 - 2¹² = 22512300331 is a prime.

It is a super-2 number, since 2×22512304427² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22512304393 and 22512304402.

It is not an unprimeable number, because it can be changed into a prime (22512304027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103267343 + ... + 103267560.

It is an arithmetic number, because the mean of its divisors is an integer number (5679709860).

Almost surely, 2^22512304427 is an apocalyptic number.

22512304427 is a deficient number, since it is larger than the sum of its proper divisors (206535013).

22512304427 is a wasteful number, since it uses less digits than its factorization.

22512304427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206535012.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 22512304427 its reverse (72440321522), we get a palindrome (94952625949).

The spelling of 22512304427 in words is "twenty-two billion, five hundred twelve million, three hundred four thousand, four hundred twenty-seven".