21213404620414 has 32 divisors (see below), whose sum is σ = 33424781935104. Its totient is φ = 10077960103200.

The previous prime is 21213404620357. The next prime is 21213404620433. The reversal of 21213404620414 is 41402640431212.

It is a self number, because there is not a number n which added to its sum of digits gives 21213404620414.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260941417 + ... + 261022699.

It is an arithmetic number, because the mean of its divisors is an integer number (1044524435472).

Almost surely, 2^{21213404620414} is an apocalyptic number.

21213404620414 is a deficient number, since it is larger than the sum of its proper divisors (12211377314690).

21213404620414 is a wasteful number, since it uses less digits than its factorization.

21213404620414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119032.

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 21213404620414 in words is "twenty-one trillion, two hundred thirteen billion, four hundred four million, six hundred twenty thousand, four hundred fourteen".