21121526542303 has 8 divisors (see below), whose sum is σ = 23041932547536. Its totient is φ = 19201165075200.

The previous prime is 21121526542261. The next prime is 21121526542309. The reversal of 21121526542303 is 30324562512112.

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 a de Polignac number, because none of the positive numbers 2^k-21121526542303 is a prime.

It is a super-2 number, since 2×21121526542303² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121526542309) 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, 10139076 + ... + 12043417.

It is an arithmetic number, because the mean of its divisors is an integer number (2880241568442).

Almost surely, 2^{21121526542303} is an apocalyptic number.

21121526542303 is a deficient number, since it is larger than the sum of its proper divisors (1920406005233).

21121526542303 is a wasteful number, since it uses less digits than its factorization.

21121526542303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22269065.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 21121526542303 in words is "twenty-one trillion, one hundred twenty-one billion, five hundred twenty-six million, five hundred forty-two thousand, three hundred three".