21254233074811 has 8 divisors (see below), whose sum is σ = 23186857877424. Its totient is φ = 19321678571520.

The previous prime is 21254233074769. The next prime is 21254233074829. The reversal of 21254233074811 is 11847033245212.

It is a happy number.

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 21254233074811 - 2¹¹ = 21254233072763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21254233074311) 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, 16941670 + ... + 18152923.

It is an arithmetic number, because the mean of its divisors is an integer number (2898357234678).

Almost surely, 2^{21254233074811} is an apocalyptic number.

21254233074811 is a deficient number, since it is larger than the sum of its proper divisors (1932624802613).

21254233074811 is a wasteful number, since it uses less digits than its factorization.

21254233074811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35149661.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 21254233074811 in words is "twenty-one trillion, two hundred fifty-four billion, two hundred thirty-three million, seventy-four thousand, eight hundred eleven".