21213121300202 has 32 divisors (see below), whose sum is σ = 34281080537088. Its totient is φ = 9786749152896.

The previous prime is 21213121300193. The next prime is 21213121300207. The reversal of 21213121300202 is 20200312131212.

It is not an unprimeable number, because it can be changed into a prime (21213121300207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931082903 + ... + 931105685.

It is an arithmetic number, because the mean of its divisors is an integer number (1071283766784).

Almost surely, 2^{21213121300202} is an apocalyptic number.

21213121300202 is a deficient number, since it is larger than the sum of its proper divisors (13067959236886).

21213121300202 is a wasteful number, since it uses less digits than its factorization.

21213121300202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35574.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21213121300202 its reverse (20200312131212), we get a palindrome (41413433431414).

The spelling of 21213121300202 in words is "twenty-one trillion, two hundred thirteen billion, one hundred twenty-one million, three hundred thousand, two hundred two".