20401322201 has 8 divisors (see below), whose sum is σ = 22728263880. Its totient is φ = 18182610432.

The previous prime is 20401322131. The next prime is 20401322203. The reversal of 20401322201 is 10222310402.

It can be written as a sum of positive squares in 4 ways, for example, as 485056576 + 19916265625 = 22024^2 + 141125^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401322201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401322201.

It is not an unprimeable number, because it can be changed into a prime (20401322203) 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, 27057080 + ... + 27057833.

It is an arithmetic number, because the mean of its divisors is an integer number (2841032985).

Almost surely, 2^20401322201 is an apocalyptic number.

It is an amenable number.

20401322201 is a deficient number, since it is larger than the sum of its proper divisors (2326941679).

20401322201 is a wasteful number, since it uses less digits than its factorization.

20401322201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54114955.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20401322201 its reverse (10222310402), we get a palindrome (30623632603).

The spelling of 20401322201 in words is "twenty billion, four hundred one million, three hundred twenty-two thousand, two hundred one".