21422103402204 has 72 divisors (see below), whose sum is σ = 54762288431760. Its totient is φ = 7060011974400.

The previous prime is 21422103402149. The next prime is 21422103402221. The reversal of 21422103402204 is 40220430122412.

It is a happy number.

21422103402204 is a `hidden beast` number, since 2 + 1 + 42 + 2 + 10 + 3 + 402 + 204 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51251299 + ... + 51667589.

It is an arithmetic number, because the mean of its divisors is an integer number (760587339330).

Almost surely, 2^{21422103402204} is an apocalyptic number.

It is an amenable number.

21422103402204 is an abundant number, since it is smaller than the sum of its proper divisors (33340185029556).

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

21422103402204 is a wasteful number, since it uses less digits than its factorization.

21422103402204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432451 (or 432446 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21422103402204 its reverse (40220430122412), we get a palindrome (61642533524616).

The spelling of 21422103402204 in words is "twenty-one trillion, four hundred twenty-two billion, one hundred three million, four hundred two thousand, two hundred four".