21201410436 has 96 divisors (see below), whose sum is σ = 51199948800. Its totient is φ = 6824787840.

The previous prime is 21201410371. The next prime is 21201410437. The reversal of 21201410436 is 63401410212.

It is not an unprimeable number, because it can be changed into a prime (21201410437) 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, 28688955 + ... + 28689693.

It is an arithmetic number, because the mean of its divisors is an integer number (533332800).

Almost surely, 2^21201410436 is an apocalyptic number.

It is an amenable number.

21201410436 is an abundant number, since it is smaller than the sum of its proper divisors (29998538364).

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

21201410436 is a wasteful number, since it uses less digits than its factorization.

21201410436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21201410436 its reverse (63401410212), we get a palindrome (84602820648).

The spelling of 21201410436 in words is "twenty-one billion, two hundred one million, four hundred ten thousand, four hundred thirty-six".