21343215133452 has 48 divisors (see below), whose sum is σ = 50124581830400. Its totient is φ = 7068167376192.

The previous prime is 21343215133433. The next prime is 21343215133469. The reversal of 21343215133452 is 25433151234312.

It is a happy number.

21343215133452 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×21343215133452³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21343215133452.

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, 13769193 + ... + 15240639.

Almost surely, 2^{21343215133452} is an apocalyptic number.

It is an amenable number.

21343215133452 is an abundant number, since it is smaller than the sum of its proper divisors (28781366696948).

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

21343215133452 is a wasteful number, since it uses less digits than its factorization.

21343215133452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479310 (or 1479308 counting only the distinct ones).

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

Adding to 21343215133452 its reverse (25433151234312), we get a palindrome (46776366367764).

The spelling of 21343215133452 in words is "twenty-one trillion, three hundred forty-three billion, two hundred fifteen million, one hundred thirty-three thousand, four hundred fifty-two".