20601622221 has 8 divisors (see below), whose sum is σ = 27469643520. Its totient is φ = 13734007872.

The previous prime is 20601622213. The next prime is 20601622241. The reversal of 20601622221 is 12222610602.

It is a happy number.

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

It is not a de Polignac number, because 20601622221 - 2³ = 20601622213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20601622191 and 20601622200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601622211) 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, 47781 + ... + 208533.

It is an arithmetic number, because the mean of its divisors is an integer number (3433705440).

Almost surely, 2^20601622221 is an apocalyptic number.

It is an amenable number.

20601622221 is a deficient number, since it is larger than the sum of its proper divisors (6868021299).

20601622221 is a wasteful number, since it uses less digits than its factorization.

20601622221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203475.

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 20601622221 in words is "twenty billion, six hundred one million, six hundred twenty-two thousand, two hundred twenty-one".