21002241032 has 32 divisors (see below), whose sum is σ = 41838125400. Its totient is φ = 9864981504.

The previous prime is 21002241023. The next prime is 21002241037. The reversal of 21002241032 is 23014220012.

It can be written as a sum of positive squares in 4 ways, for example, as 20131636996 + 870604036 = 141886^2 + 29506^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21002241032.

It is not an unprimeable number, because it can be changed into a prime (21002241037) 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, 1214753 + ... + 1231920.

Almost surely, 2^21002241032 is an apocalyptic number.

It is an amenable number.

21002241032 is a deficient number, since it is larger than the sum of its proper divisors (20835884368).

21002241032 is a wasteful number, since it uses less digits than its factorization.

21002241032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446745 (or 2446741 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21002241032 its reverse (23014220012), we get a palindrome (44016461044).

The spelling of 21002241032 in words is "twenty-one billion, two million, two hundred forty-one thousand, thirty-two".