21332121213202 has 4 divisors (see below), whose sum is σ = 31998181819806. Its totient is φ = 10666060606600.

The previous prime is 21332121213133. The next prime is 21332121213203. The reversal of 21332121213202 is 20231212123312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20896152855361 + 435968357841 = 4571231^2 + 660279^2 .

It is not an unprimeable number, because it can be changed into a prime (21332121213203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333030303299 + ... + 5333030303302.

Almost surely, 2^{21332121213202} is an apocalyptic number.

21332121213202 is a deficient number, since it is larger than the sum of its proper divisors (10666060606604).

21332121213202 is a wasteful number, since it uses less digits than its factorization.

21332121213202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666060606603.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21332121213202 its reverse (20231212123312), we get a palindrome (41563333336514).

The spelling of 21332121213202 in words is "twenty-one trillion, three hundred thirty-two billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred two".