21103113033033 has 16 divisors (see below), whose sum is σ = 28343123420160. Its totient is φ = 13965924191616.

The previous prime is 21103113033029. The next prime is 21103113033047. The reversal of 21103113033033 is 33033031130112.

It is not a de Polignac number, because 21103113033033 - 2² = 21103113033029 is a prime.

It is a super-4 number, since 4×21103113033033⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21103113032994 and 21103113033012.

It is not an unprimeable number, because it can be changed into a prime (21103113033533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74544408 + ... + 74826966.

It is an arithmetic number, because the mean of its divisors is an integer number (1771445213760).

Almost surely, 2^{21103113033033} is an apocalyptic number.

It is an amenable number.

21103113033033 is a deficient number, since it is larger than the sum of its proper divisors (7240010387127).

21103113033033 is a wasteful number, since it uses less digits than its factorization.

21103113033033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464416.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 21103113033033 its reverse (33033031130112), we get a palindrome (54136144163145).

The spelling of 21103113033033 in words is "twenty-one trillion, one hundred three billion, one hundred thirteen million, thirty-three thousand, thirty-three".