21103320133334 has 16 divisors (see below), whose sum is σ = 31727440981872. Its totient is φ = 10527529081248.

The previous prime is 21103320133327. The next prime is 21103320133349. The reversal of 21103320133334 is 43333102330112.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21103320133297 and 21103320133306.

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, 3783869 + ... + 7518264.

It is an arithmetic number, because the mean of its divisors is an integer number (1982965061367).

Almost surely, 2^{21103320133334} is an apocalyptic number.

21103320133334 is a deficient number, since it is larger than the sum of its proper divisors (10624120848538).

21103320133334 is a wasteful number, since it uses less digits than its factorization.

21103320133334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11304271.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21103320133334 its reverse (43333102330112), we get a palindrome (64436422463446).

The spelling of 21103320133334 in words is "twenty-one trillion, one hundred three billion, three hundred twenty million, one hundred thirty-three thousand, three hundred thirty-four".