21021130452411 has 12 divisors (see below), whose sum is σ = 31961952734920. Its totient is φ = 13276503443520.

The previous prime is 21021130452391. The next prime is 21021130452433. The reversal of 21021130452411 is 11425403112012.

21021130452411 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 1 + 130 + 4 + 524 + 1 + 1 = 666.

It is not a de Polignac number, because 21021130452411 - 2¹⁷ = 21021130321339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21021130452011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61465293550 + ... + 61465293891.

Almost surely, 2^{21021130452411} is an apocalyptic number.

21021130452411 is a deficient number, since it is larger than the sum of its proper divisors (10940822282509).

21021130452411 is a wasteful number, since it uses less digits than its factorization.

21021130452411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122930587466 (or 122930587463 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 21021130452411 its reverse (11425403112012), we get a palindrome (32446533564423).

The spelling of 21021130452411 in words is "twenty-one trillion, twenty-one billion, one hundred thirty million, four hundred fifty-two thousand, four hundred eleven".