21264022054442 has 8 divisors (see below), whose sum is σ = 31897457651232. Its totient is φ = 10631536170700.

The previous prime is 21264022054439. The next prime is 21264022054501. The reversal of 21264022054442 is 24445022046212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21264022054396 and 21264022054405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237372284 + ... + 237461847.

It is an arithmetic number, because the mean of its divisors is an integer number (3987182206404).

Almost surely, 2^{21264022054442} is an apocalyptic number.

21264022054442 is a deficient number, since it is larger than the sum of its proper divisors (10633435596790).

21264022054442 is a wasteful number, since it uses less digits than its factorization.

21264022054442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474856524.

The product of its (nonzero) digits is 245760, while the sum is 38.

The spelling of 21264022054442 in words is "twenty-one trillion, two hundred sixty-four billion, twenty-two million, fifty-four thousand, four hundred forty-two".