21022132534 has 16 divisors (see below), whose sum is σ = 33964807968. Its totient is φ = 9700814592.

The previous prime is 21022132531. The next prime is 21022132553. The reversal of 21022132534 is 43523122012.

It is a super-2 number, since 2×21022132534² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022132499 and 21022132508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022132531) 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, 85894 + ... + 222310.

It is an arithmetic number, because the mean of its divisors is an integer number (2122800498).

Almost surely, 2^21022132534 is an apocalyptic number.

21022132534 is a deficient number, since it is larger than the sum of its proper divisors (12942675434).

21022132534 is a wasteful number, since it uses less digits than its factorization.

21022132534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142359.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 21022132534 its reverse (43523122012), we get a palindrome (64545254546).

The spelling of 21022132534 in words is "twenty-one billion, twenty-two million, one hundred thirty-two thousand, five hundred thirty-four".