21333400214 has 32 divisors (see below), whose sum is σ = 37119513600. Its totient is φ = 9006655680.

The previous prime is 21333400211. The next prime is 21333400259. The reversal of 21333400214 is 41200433312.

It is a super-2 number, since 2×21333400214² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21333400214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333400211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306077 + ... + 369255.

It is an arithmetic number, because the mean of its divisors is an integer number (1159984800).

Almost surely, 2^21333400214 is an apocalyptic number.

21333400214 is a deficient number, since it is larger than the sum of its proper divisors (15786113386).

21333400214 is a wasteful number, since it uses less digits than its factorization.

21333400214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63548.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21333400214 its reverse (41200433312), we get a palindrome (62533833526).

The spelling of 21333400214 in words is "twenty-one billion, three hundred thirty-three million, four hundred thousand, two hundred fourteen".