21335001301406 has 16 divisors (see below), whose sum is σ = 34465754148000. Its totient is φ = 9846489027168.

The previous prime is 21335001301399. The next prime is 21335001301447. The reversal of 21335001301406 is 60410310053312.

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, 17509706 + ... + 18688493.

It is an arithmetic number, because the mean of its divisors is an integer number (2154109634250).

Almost surely, 2^{21335001301406} is an apocalyptic number.

21335001301406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21335001301406 is a deficient number, since it is larger than the sum of its proper divisors (13130752846594).

21335001301406 is a wasteful number, since it uses less digits than its factorization.

21335001301406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36220883.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 21335001301406 its reverse (60410310053312), we get a palindrome (81745311354718).

The spelling of 21335001301406 in words is "twenty-one trillion, three hundred thirty-five billion, one million, three hundred one thousand, four hundred six".