2105421022 has 4 divisors (see below), whose sum is σ = 3158131536. Its totient is φ = 1052710510.

The previous prime is 2105420969. The next prime is 2105421023. The reversal of 2105421022 is 2201245012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105421023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526355254 + ... + 526355257.

It is an arithmetic number, because the mean of its divisors is an integer number (789532884).

Almost surely, 2^2105421022 is an apocalyptic number.

2105421022 is a deficient number, since it is larger than the sum of its proper divisors (1052710514).

2105421022 is a wasteful number, since it uses less digits than its factorization.

2105421022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052710513.

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

The square root of 2105421022 is about 45884.8670260686. The cubic root of 2105421022 is about 1281.6801305251.

Adding to 2105421022 its reverse (2201245012), we get a palindrome (4306666034).

The spelling of 2105421022 in words is "two billion, one hundred five million, four hundred twenty-one thousand, twenty-two".