22001212112146 has 8 divisors (see below), whose sum is σ = 33072485874480. Its totient is φ = 10977050153988.

The previous prime is 22001212112063. The next prime is 22001212112147. The reversal of 22001212112146 is 64121121210022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22001212112146.

It is not an unprimeable number, because it can be changed into a prime (22001212112147) 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, 11777949876 + ... + 11777951743.

It is an arithmetic number, because the mean of its divisors is an integer number (4134060734310).

Almost surely, 2^{22001212112146} is an apocalyptic number.

22001212112146 is a deficient number, since it is larger than the sum of its proper divisors (11071273762334).

22001212112146 is a wasteful number, since it uses less digits than its factorization.

22001212112146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23555902088.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 22001212112146 its reverse (64121121210022), we get a palindrome (86122333322168).

The spelling of 22001212112146 in words is "twenty-two trillion, one billion, two hundred twelve million, one hundred twelve thousand, one hundred forty-six".