21364212441426 has 8 divisors (see below), whose sum is σ = 42728424882864. Its totient is φ = 7121404147140.

The previous prime is 21364212441413. The next prime is 21364212441541. The reversal of 21364212441426 is 62414421246312.

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

21364212441426 is an admirable number.

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, 1780351036780 + ... + 1780351036791.

It is an arithmetic number, because the mean of its divisors is an integer number (5341053110358).

Almost surely, 2^{21364212441426} is an apocalyptic number.

21364212441426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21364212441426 is a wasteful number, since it uses less digits than its factorization.

21364212441426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560702073576.

The product of its digits is 442368, while the sum is 42.

Adding to 21364212441426 its reverse (62414421246312), we get a palindrome (83778633687738).

The spelling of 21364212441426 in words is "twenty-one trillion, three hundred sixty-four billion, two hundred twelve million, four hundred forty-one thousand, four hundred twenty-six".