21213600060461 has 8 divisors (see below), whose sum is σ = 21356147072064. Its totient is φ = 21071204295840.

The previous prime is 21213600060413. The next prime is 21213600060467. The reversal of 21213600060461 is 16406000631212.

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 21213600060461 - 2⁴² = 16815553549357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213600060467) 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, 37530281 + ... + 38091326.

It is an arithmetic number, because the mean of its divisors is an integer number (2669518384008).

Almost surely, 2^{21213600060461} is an apocalyptic number.

It is an amenable number.

21213600060461 is a deficient number, since it is larger than the sum of its proper divisors (142547011603).

21213600060461 is a wasteful number, since it uses less digits than its factorization.

21213600060461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75623491.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 21213600060461 its reverse (16406000631212), we get a palindrome (37619600691673).

The spelling of 21213600060461 in words is "twenty-one trillion, two hundred thirteen billion, six hundred million, sixty thousand, four hundred sixty-one".