21123032103311 has 8 divisors (see below), whose sum is σ = 21214621148160. Its totient is φ = 21031640662968.

The previous prime is 21123032103241. The next prime is 21123032103317. The reversal of 21123032103311 is 11330123032112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21123032103311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123032103317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49186871 + ... + 49614456.

It is an arithmetic number, because the mean of its divisors is an integer number (2651827643520).

Almost surely, 2^{21123032103311} is an apocalyptic number.

21123032103311 is a deficient number, since it is larger than the sum of its proper divisors (91589044849).

21123032103311 is an equidigital number, since it uses as much as digits as its factorization.

21123032103311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98802253.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21123032103311 its reverse (11330123032112), we get a palindrome (32453155135423).

The spelling of 21123032103311 in words is "twenty-one trillion, one hundred twenty-three billion, thirty-two million, one hundred three thousand, three hundred eleven".