2104221031 has 4 divisors (see below), whose sum is σ = 2295513864. Its totient is φ = 1912928200.

The previous prime is 2104221029. The next prime is 2104221071. The reversal of 2104221031 is 1301224012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2104221031 - 2¹ = 2104221029 is a prime.

It is a super-2 number, since 2×2104221031² = 8855492294605405922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2104220996 and 2104221014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104221071) 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, 95646400 + ... + 95646421.

It is an arithmetic number, because the mean of its divisors is an integer number (573878466).

Almost surely, 2^2104221031 is an apocalyptic number.

2104221031 is a deficient number, since it is larger than the sum of its proper divisors (191292833).

2104221031 is a wasteful number, since it uses less digits than its factorization.

2104221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191292832.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2104221031 is about 45871.7890538401. The cubic root of 2104221031 is about 1281.4365851099.

Adding to 2104221031 its reverse (1301224012), we get a palindrome (3405445043).

The spelling of 2104221031 in words is "two billion, one hundred four million, two hundred twenty-one thousand, thirty-one".