21304214054 has 16 divisors (see below), whose sum is σ = 33839367408. Its totient is φ = 10024545792.

The previous prime is 21304214051. The next prime is 21304214119. The reversal of 21304214054 is 45041240312.

It is a super-2 number, since 2×21304214054² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21304214051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428537 + ... + 475659.

It is an arithmetic number, because the mean of its divisors is an integer number (2114960463).

Almost surely, 2^21304214054 is an apocalyptic number.

21304214054 is a deficient number, since it is larger than the sum of its proper divisors (12535153354).

21304214054 is a wasteful number, since it uses less digits than its factorization.

21304214054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60439.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 21304214054 its reverse (45041240312), we get a palindrome (66345454366).

The spelling of 21304214054 in words is "twenty-one billion, three hundred four million, two hundred fourteen thousand, fifty-four".