21214035532454 has 32 divisors (see below), whose sum is σ = 32198395608576. Its totient is φ = 10481745526560.

The previous prime is 21214035532447. The next prime is 21214035532477. The reversal of 21214035532454 is 45423553041212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315740744 + ... + 315807924.

It is an arithmetic number, because the mean of its divisors is an integer number (1006199862768).

Almost surely, 2^{21214035532454} is an apocalyptic number.

21214035532454 is a deficient number, since it is larger than the sum of its proper divisors (10984360076122).

21214035532454 is a wasteful number, since it uses less digits than its factorization.

21214035532454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70940.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 21214035532454 its reverse (45423553041212), we get a palindrome (66637588573666).

The spelling of 21214035532454 in words is "twenty-one trillion, two hundred fourteen billion, thirty-five million, five hundred thirty-two thousand, four hundred fifty-four".