21202233023201 has 8 divisors (see below), whose sum is σ = 21232983224040. Its totient is φ = 21171487796352.

The previous prime is 21202233023197. The next prime is 21202233023221. The reversal of 21202233023201 is 10232033220212.

It can be written as a sum of positive squares in 4 ways, for example, as 15323310250000 + 5878922773201 = 3914500^2 + 2424649^2 .

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 21202233023201 - 2² = 21202233023197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202233023221) 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, 7330751 + ... + 9805323.

It is an arithmetic number, because the mean of its divisors is an integer number (2654122903005).

Almost surely, 2^{21202233023201} is an apocalyptic number.

It is an amenable number.

21202233023201 is a deficient number, since it is larger than the sum of its proper divisors (30750200839).

21202233023201 is a wasteful number, since it uses less digits than its factorization.

21202233023201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486995.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21202233023201 its reverse (10232033220212), we get a palindrome (31434266243413).

The spelling of 21202233023201 in words is "twenty-one trillion, two hundred two billion, two hundred thirty-three million, twenty-three thousand, two hundred one".