21333421253514 has 32 divisors (see below), whose sum is σ = 43575204476160. Its totient is φ = 6959750623232.

The previous prime is 21333421253497. The next prime is 21333421253519. The reversal of 21333421253514 is 41535212433312.

It is a happy number.

It is a super-2 number, since 2×21333421253514² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21333421253519) 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, 23780302 + ... + 24661094.

It is an arithmetic number, because the mean of its divisors is an integer number (1361725139880).

Almost surely, 2^{21333421253514} is an apocalyptic number.

21333421253514 is an abundant number, since it is smaller than the sum of its proper divisors (22241783222646).

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

21333421253514 is a wasteful number, since it uses less digits than its factorization.

21333421253514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966734.

The product of its digits is 259200, while the sum is 39.

Adding to 21333421253514 its reverse (41535212433312), we get a palindrome (62868633686826).

The spelling of 21333421253514 in words is "twenty-one trillion, three hundred thirty-three billion, four hundred twenty-one million, two hundred fifty-three thousand, five hundred fourteen".