21011042140325 has 24 divisors (see below), whose sum is σ = 27542642961600. Its totient is φ = 15855814143360.

The previous prime is 21011042140261. The next prime is 21011042140351. The reversal of 21011042140325 is 52304124011012.

It is a happy number.

It is not a de Polignac number, because 21011042140325 - 2⁶ = 21011042140261 is a prime.

It is a super-3 number, since 3×21011042140325³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21011042140294 and 21011042140303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94811585 + ... + 95032934.

It is an arithmetic number, because the mean of its divisors is an integer number (1147610123400).

Almost surely, 2^{21011042140325} is an apocalyptic number.

21011042140325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21011042140325 is a deficient number, since it is larger than the sum of its proper divisors (6531600821275).

21011042140325 is a wasteful number, since it uses less digits than its factorization.

21011042140325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189844781 (or 189844776 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 21011042140325 its reverse (52304124011012), we get a palindrome (73315166151337).

The spelling of 21011042140325 in words is "twenty-one trillion, eleven billion, forty-two million, one hundred forty thousand, three hundred twenty-five".