21225021354430 has 16 divisors (see below), whose sum is σ = 39866127066144. Its totient is φ = 8120877735520.

The previous prime is 21225021354389. The next prime is 21225021354443. The reversal of 21225021354430 is 3445312052212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46141350541 + ... + 46141351000.

It is an arithmetic number, because the mean of its divisors is an integer number (2491632941634).

Almost surely, 2^{21225021354430} is an apocalyptic number.

21225021354430 is a deficient number, since it is larger than the sum of its proper divisors (18641105711714).

21225021354430 is a wasteful number, since it uses less digits than its factorization.

21225021354430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92282701571.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 21225021354430 in words is "twenty-one trillion, two hundred twenty-five billion, twenty-one million, three hundred fifty-four thousand, four hundred thirty".