21133012523054 has 4 divisors (see below), whose sum is σ = 31699518784584. Its totient is φ = 10566506261526.

The previous prime is 21133012523027. The next prime is 21133012523081. The reversal of 21133012523054 is 45032521033112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21133012523027) and next prime (21133012523081).

It is a self number, because there is not a number n which added to its sum of digits gives 21133012523054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5283253130762 + ... + 5283253130765.

It is an arithmetic number, because the mean of its divisors is an integer number (7924879696146).

Almost surely, 2^{21133012523054} is an apocalyptic number.

21133012523054 is a deficient number, since it is larger than the sum of its proper divisors (10566506261530).

21133012523054 is a wasteful number, since it uses less digits than its factorization.

21133012523054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10566506261529.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 21133012523054 its reverse (45032521033112), we get a palindrome (66165533556166).

The spelling of 21133012523054 in words is "twenty-one trillion, one hundred thirty-three billion, twelve million, five hundred twenty-three thousand, fifty-four".