22061612143621 has 8 divisors (see below), whose sum is σ = 22114715319584. Its totient is φ = 22008512287440.

The previous prime is 22061612143607. The next prime is 22061612143699. The reversal of 22061612143621 is 12634121616022.

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

It is a cyclic number.

It is not a de Polignac number, because 22061612143621 - 2¹¹ = 22061612141573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22061612143121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12743830 + ... + 14371096.

It is an arithmetic number, because the mean of its divisors is an integer number (2764339414948).

Almost surely, 2^{22061612143621} is an apocalyptic number.

It is an amenable number.

22061612143621 is a deficient number, since it is larger than the sum of its proper divisors (53103175963).

22061612143621 is a wasteful number, since it uses less digits than its factorization.

22061612143621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659891.

The product of its (nonzero) digits is 41472, while the sum is 37.

Adding to 22061612143621 its reverse (12634121616022), we get a palindrome (34695733759643).

The spelling of 22061612143621 in words is "twenty-two trillion, sixty-one billion, six hundred twelve million, one hundred forty-three thousand, six hundred twenty-one".