21214026552426 has 8 divisors (see below), whose sum is σ = 42428053104864. Its totient is φ = 7071342184140.

The previous prime is 21214026552373. The next prime is 21214026552427. The reversal of 21214026552426 is 62425562041212.

It is a happy number.

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

21214026552426 is an admirable number.

It is a super-3 number, since 3×21214026552426³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21214026552427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767835546030 + ... + 1767835546041.

It is an arithmetic number, because the mean of its divisors is an integer number (5303506638108).

Almost surely, 2^{21214026552426} is an apocalyptic number.

21214026552426 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.

21214026552426 is a wasteful number, since it uses less digits than its factorization.

21214026552426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535671092076.

The product of its (nonzero) digits is 460800, while the sum is 42.

Adding to 21214026552426 its reverse (62425562041212), we get a palindrome (83639588593638).

The spelling of 21214026552426 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, five hundred fifty-two thousand, four hundred twenty-six".