21402040320110 has 32 divisors (see below), whose sum is σ = 38686412941920. Its totient is φ = 8524693254528.

The previous prime is 21402040320109. The next prime is 21402040320127. The reversal of 21402040320110 is 1102304020412.

It is a super-2 number, since 2×21402040320110² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1509596 + ... + 6714384.

It is an arithmetic number, because the mean of its divisors is an integer number (1208950404435).

Almost surely, 2^{21402040320110} is an apocalyptic number.

21402040320110 is a deficient number, since it is larger than the sum of its proper divisors (17284372621810).

21402040320110 is a wasteful number, since it uses less digits than its factorization.

21402040320110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206532.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21402040320110 its reverse (1102304020412), we get a palindrome (22504344340522).

The spelling of 21402040320110 in words is "twenty-one trillion, four hundred two billion, forty million, three hundred twenty thousand, one hundred ten".