21021132301012 has 24 divisors (see below), whose sum is σ = 37642721298336. Its totient is φ = 10266072041568.

The previous prime is 21021132300937. The next prime is 21021132301019. The reversal of 21021132301012 is 21010323112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021132301019) 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, 42181758 + ... + 42677194.

It is an arithmetic number, because the mean of its divisors is an integer number (1568446720764).

Almost surely, 2^{21021132301012} is an apocalyptic number.

It is an amenable number.

21021132301012 is a deficient number, since it is larger than the sum of its proper divisors (16621588997324).

21021132301012 is a wasteful number, since it uses less digits than its factorization.

21021132301012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742167 (or 742165 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21021132301012 its reverse (21010323112012), we get a palindrome (42031455413024).

The spelling of 21021132301012 in words is "twenty-one trillion, twenty-one billion, one hundred thirty-two million, three hundred one thousand, twelve".