21124258412211 has 28 divisors (see below), whose sum is σ = 32105760813288. Its totient is φ = 13889923304544.

The previous prime is 21124258412149. The next prime is 21124258412303. The reversal of 21124258412211 is 11221485242112.

21124258412211 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 4 + 25 + 8 + 412 + 211 = 666.

It is not a de Polignac number, because 21124258412211 - 2¹¹ = 21124258410163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21124258412711) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 198419625 + ... + 198526058.

Almost surely, 2^{21124258412211} is an apocalyptic number.

21124258412211 is a deficient number, since it is larger than the sum of its proper divisors (10981502401077).

21124258412211 is an frugal number, since it uses more digits than its factorization.

21124258412211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396945774 (or 396945759 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The spelling of 21124258412211 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred fifty-eight million, four hundred twelve thousand, two hundred eleven".