21214035535024 has 40 divisors (see below), whose sum is σ = 43801782935040. Its totient is φ = 9929974072128.

The previous prime is 21214035535013. The next prime is 21214035535027. The reversal of 21214035535024 is 42053553041212.

It is a happy number.

It is a super-2 number, since 2×21214035535024² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21214035535027) 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, 613246914 + ... + 613281505.

It is an arithmetic number, because the mean of its divisors is an integer number (1095044573376).

Almost surely, 2^{21214035535024} is an apocalyptic number.

It is an amenable number.

21214035535024 is an abundant number, since it is smaller than the sum of its proper divisors (22587747400016).

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

21214035535024 is a wasteful number, since it uses less digits than its factorization.

21214035535024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226528497 (or 1226528491 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 21214035535024 its reverse (42053553041212), we get a palindrome (63267588576236).

The spelling of 21214035535024 in words is "twenty-one trillion, two hundred fourteen billion, thirty-five million, five hundred thirty-five thousand, twenty-four".