21120022200202 has 8 divisors (see below), whose sum is σ = 31684447427076. Its totient is φ = 10558539724512.

The previous prime is 21120022200169. The next prime is 21120022200247. The reversal of 21120022200202 is 20200222002112.

It can be written as a sum of positive squares in 2 ways, for example, as 20874582214641 + 245439985561 = 4568871^2 + 495419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735669853 + ... + 735698560.

Almost surely, 2^{21120022200202} is an apocalyptic number.

21120022200202 is a deficient number, since it is larger than the sum of its proper divisors (10564425226874).

21120022200202 is a wasteful number, since it uses less digits than its factorization.

21120022200202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471375592.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21120022200202 its reverse (20200222002112), we get a palindrome (41320244202314).

The spelling of 21120022200202 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, two hundred thousand, two hundred two".