22051620671 has 4 divisors (see below), whose sum is σ = 22072845600. Its totient is φ = 22030395744.

The previous prime is 22051620659. The next prime is 22051620683. The reversal of 22051620671 is 17602615022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17602615022 = 2 ⋅8801307511.

It is an interprime number because it is at equal distance from previous prime (22051620659) and next prime (22051620683).

It is a cyclic number.

It is not a de Polignac number, because 22051620671 - 2⁶ = 22051620607 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 (22051620971) 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, 10610906 + ... + 10612983.

It is an arithmetic number, because the mean of its divisors is an integer number (5518211400).

Almost surely, 2^22051620671 is an apocalyptic number.

22051620671 is a deficient number, since it is larger than the sum of its proper divisors (21224929).

22051620671 is a wasteful number, since it uses less digits than its factorization.

22051620671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21224928.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 22051620671 in words is "twenty-two billion, fifty-one million, six hundred twenty thousand, six hundred seventy-one".