21301133012 has 24 divisors (see below), whose sum is σ = 39382882560. Its totient is φ = 10064509280.

The previous prime is 21301133011. The next prime is 21301133023. The reversal of 21301133012 is 21033110312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301133011) 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, 1948064 + ... + 1958967.

It is an arithmetic number, because the mean of its divisors is an integer number (1640953440).

Almost surely, 2^21301133012 is an apocalyptic number.

It is an amenable number.

21301133012 is a deficient number, since it is larger than the sum of its proper divisors (18081749548).

21301133012 is a wasteful number, since it uses less digits than its factorization.

21301133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907111 (or 3907109 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21301133012 its reverse (21033110312), we get a palindrome (42334243324).

The spelling of 21301133012 in words is "twenty-one billion, three hundred one million, one hundred thirty-three thousand, twelve".