21214323054354 has 16 divisors (see below), whose sum is σ = 42905372470560. Its totient is φ = 6991986624480.

The previous prime is 21214323054349. The next prime is 21214323054487. The reversal of 21214323054354 is 45345032341212.

It is a happy number.

It is a super-3 number, since 3×21214323054354³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19863597832 + ... + 19863598899.

It is an arithmetic number, because the mean of its divisors is an integer number (2681585779410).

Almost surely, 2^{21214323054354} is an apocalyptic number.

21214323054354 is an abundant number, since it is smaller than the sum of its proper divisors (21691049416206).

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

21214323054354 is a wasteful number, since it uses less digits than its factorization.

21214323054354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39727196825.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 21214323054354 its reverse (45345032341212), we get a palindrome (66559355395566).

The spelling of 21214323054354 in words is "twenty-one trillion, two hundred fourteen billion, three hundred twenty-three million, fifty-four thousand, three hundred fifty-four".