21232002020213 has 8 divisors (see below), whose sum is σ = 21982187830680. Its totient is φ = 20483019397120.

The previous prime is 21232002020209. The next prime is 21232002020269. The reversal of 21232002020213 is 31202020023212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1105814186929 + 20126187833284 = 1051577^2 + 4486222^2 .

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 21232002020213 - 2² = 21232002020209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232002029213) 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, 300760928 + ... + 300831513.

It is an arithmetic number, because the mean of its divisors is an integer number (2747773478835).

Almost surely, 2^{21232002020213} is an apocalyptic number.

It is an amenable number.

21232002020213 is a deficient number, since it is larger than the sum of its proper divisors (750185810467).

21232002020213 is a wasteful number, since it uses less digits than its factorization.

21232002020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601593687.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21232002020213 its reverse (31202020023212), we get a palindrome (52434022043425).

The spelling of 21232002020213 in words is "twenty-one trillion, two hundred thirty-two billion, two million, twenty thousand, two hundred thirteen".