21031033132 has 24 divisors (see below), whose sum is σ = 38996717760. Its totient is φ = 9889985280.

The previous prime is 21031033117. The next prime is 21031033147. The reversal of 21031033132 is 23133013012.

It is an interprime number because it is at equal distance from previous prime (21031033117) and next prime (21031033147).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11044 + ... + 205387.

It is an arithmetic number, because the mean of its divisors is an integer number (1624863240).

Almost surely, 2^21031033132 is an apocalyptic number.

It is an amenable number.

21031033132 is a deficient number, since it is larger than the sum of its proper divisors (17965684628).

21031033132 is a wasteful number, since it uses less digits than its factorization.

21031033132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217881 (or 217879 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21031033132 its reverse (23133013012), we get a palindrome (44164046144).

The spelling of 21031033132 in words is "twenty-one billion, thirty-one million, thirty-three thousand, one hundred thirty-two".