21021032313011 has 8 divisors (see below), whose sum is σ = 21067226804400. Its totient is φ = 20974838681088.

The previous prime is 21021032313007. The next prime is 21021032313023. The reversal of 21021032313011 is 11031323012012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21021032313011 - 2² = 21021032313007 is a prime.

It is a super-2 number, since 2×21021032313011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21021032313091) 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, 94111340 + ... + 94334438.

It is an arithmetic number, because the mean of its divisors is an integer number (2633403350550).

Almost surely, 2^{21021032313011} is an apocalyptic number.

21021032313011 is a deficient number, since it is larger than the sum of its proper divisors (46194491389).

21021032313011 is a wasteful number, since it uses less digits than its factorization.

21021032313011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429733.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21021032313011 its reverse (11031323012012), we get a palindrome (32052355325023).

The spelling of 21021032313011 in words is "twenty-one trillion, twenty-one billion, thirty-two million, three hundred thirteen thousand, eleven".