21202233330 has 16 divisors (see below), whose sum is σ = 50885360064. Its totient is φ = 5653928880.

The previous prime is 21202233329. The next prime is 21202233347. The reversal of 21202233330 is 3333220212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21202233297 and 21202233306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353370526 + ... + 353370585.

It is an arithmetic number, because the mean of its divisors is an integer number (3180335004).

Almost surely, 2^21202233330 is an apocalyptic number.

21202233330 is an abundant number, since it is smaller than the sum of its proper divisors (29683126734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202233330 is a wasteful number, since it uses less digits than its factorization.

21202233330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706741121.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21202233330 its reverse (3333220212), we get a palindrome (24535453542).

The spelling of 21202233330 in words is "twenty-one billion, two hundred two million, two hundred thirty-three thousand, three hundred thirty".