21213611546103 has 24 divisors (see below), whose sum is σ = 30656854451808. Its totient is φ = 14135498860032.

The previous prime is 21213611546081. The next prime is 21213611546111. The reversal of 21213611546103 is 30164511631212.

21213611546103 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 6 + 1 + 1 + 546 + 103 = 666.

It is not a de Polignac number, because 21213611546103 - 2²⁴ = 21213594768887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213611556103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383325451 + ... + 383380787.

It is an arithmetic number, because the mean of its divisors is an integer number (1277368935492).

Almost surely, 2^{21213611546103} is an apocalyptic number.

21213611546103 is a deficient number, since it is larger than the sum of its proper divisors (9443242905705).

21213611546103 is a wasteful number, since it uses less digits than its factorization.

21213611546103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75383 (or 75380 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 21213611546103 in words is "twenty-one trillion, two hundred thirteen billion, six hundred eleven million, five hundred forty-six thousand, one hundred three".