20822201401 has 3 divisors (see below), whose sum is σ = 20822345701. Its totient is φ = 20822057102.

The previous prime is 20822201317. The next prime is 20822201417. The reversal of 20822201401 is 10410222802.

The square root of 20822201401 is 144299.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-20822201401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20822201431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 72150 + ... + 216448.

Almost surely, 2^20822201401 is an apocalyptic number.

20822201401 is the 144299-th square number.

20822201401 is the 72150-th centered octagonal number.

It is an amenable number.

20822201401 is a deficient number, since it is larger than the sum of its proper divisors (144300).

20822201401 is an frugal number, since it uses more digits than its factorization.

20822201401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288598 (or 144299 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 20822201401 in words is "twenty billion, eight hundred twenty-two million, two hundred one thousand, four hundred one".