2105222401 has 12 divisors (see below), whose sum is σ = 2234336400. Its totient is φ = 1983218328.

The previous prime is 2105222389. The next prime is 2105222443. The reversal of 2105222401 is 1042225012.

It is not a de Polignac number, because 2105222401 - 2²¹ = 2103125249 is a prime.

It is a super-2 number, since 2×2105222401² = 8863922715344409602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105222461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48330 + ... + 80908.

It is an arithmetic number, because the mean of its divisors is an integer number (186194700).

Almost surely, 2^2105222401 is an apocalyptic number.

It is an amenable number.

2105222401 is a deficient number, since it is larger than the sum of its proper divisors (129113999).

2105222401 is a wasteful number, since it uses less digits than its factorization.

2105222401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32796 (or 32777 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2105222401 is about 45882.7026339992. The cubic root of 2105222401 is about 1281.6398255866.

Adding to 2105222401 its reverse (1042225012), we get a palindrome (3147447413).

The spelling of 2105222401 in words is "two billion, one hundred five million, two hundred twenty-two thousand, four hundred one".