21535422051310 has 64 divisors (see below), whose sum is σ = 42475284532800. Its totient is φ = 7824936978432.

The previous prime is 21535422051271. The next prime is 21535422051313. The reversal of 21535422051310 is 1315022453512.

It is a super-2 number, since 2×21535422051310² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21535422051313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12287464 + ... + 13930276.

It is an arithmetic number, because the mean of its divisors is an integer number (663676320825).

Almost surely, 2^{21535422051310} is an apocalyptic number.

21535422051310 is a deficient number, since it is larger than the sum of its proper divisors (20939862481490).

21535422051310 is a wasteful number, since it uses less digits than its factorization.

21535422051310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645525.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 21535422051310 in words is "twenty-one trillion, five hundred thirty-five billion, four hundred twenty-two million, fifty-one thousand, three hundred ten".