22011412651 has 4 divisors (see below), whose sum is σ = 22056242904. Its totient is φ = 21966582400.

The previous prime is 22011412637. The next prime is 22011412667. The reversal of 22011412651 is 15621411022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22011412651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011412751) 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, 22414390 + ... + 22415371.

It is an arithmetic number, because the mean of its divisors is an integer number (5514060726).

Almost surely, 2^22011412651 is an apocalyptic number.

22011412651 is a deficient number, since it is larger than the sum of its proper divisors (44830253).

22011412651 is an equidigital number, since it uses as much as digits as its factorization.

22011412651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44830252.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 22011412651 its reverse (15621411022), we get a palindrome (37632823673).

The spelling of 22011412651 in words is "twenty-two billion, eleven million, four hundred twelve thousand, six hundred fifty-one".