21110532532 has 24 divisors (see below), whose sum is σ = 37480625280. Its totient is φ = 10402694400.

The previous prime is 21110532511. The next prime is 21110532539. The reversal of 21110532532 is 23523501112.

It is a junction number, because it is equal to n+sod(n) for n = 21110532497 and 21110532506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110532539) 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, 21094 + ... + 206557.

It is an arithmetic number, because the mean of its divisors is an integer number (1561692720).

Almost surely, 2^21110532532 is an apocalyptic number.

It is an amenable number.

21110532532 is a deficient number, since it is larger than the sum of its proper divisors (16370092748).

21110532532 is a wasteful number, since it uses less digits than its factorization.

21110532532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227991 (or 227989 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 21110532532 in words is "twenty-one billion, one hundred ten million, five hundred thirty-two thousand, five hundred thirty-two".