4023100321021 has 4 divisors (see below), whose sum is σ = 4234842443200. Its totient is φ = 3811358198844.

The previous prime is 4023100321007. The next prime is 4023100321027. The reversal of 4023100321021 is 1201230013204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4023100321021 - 2⁵ = 4023100320989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 211742122159 = 4023100321021 / (4 + 0 + 2 + 3 + 1 + 0 + 0 + 3 + 2 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4023100321021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023100321027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105871061061 + ... + 105871061098.

It is an arithmetic number, because the mean of its divisors is an integer number (1058710610800).

Almost surely, 2^{4023100321021} is an apocalyptic number.

It is an amenable number.

4023100321021 is a deficient number, since it is larger than the sum of its proper divisors (211742122179).

4023100321021 is a wasteful number, since it uses less digits than its factorization.

4023100321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211742122178.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 4023100321021 its reverse (1201230013204), we get a palindrome (5224330334225).

The spelling of 4023100321021 in words is "four trillion, twenty-three billion, one hundred million, three hundred twenty-one thousand, twenty-one".