2100428022 has 48 divisors (see below), whose sum is σ = 5330964672. Its totient is φ = 545564880.

The previous prime is 2100428021. The next prime is 2100428039. The reversal of 2100428022 is 2208240012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2100428022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100428021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321508 + ... + 327975.

It is an arithmetic number, because the mean of its divisors is an integer number (111061764).

Almost surely, 2^2100428022 is an apocalyptic number.

2100428022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2100428022 is an abundant number, since it is smaller than the sum of its proper divisors (3230536650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100428022 is a wasteful number, since it uses less digits than its factorization.

2100428022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649513 (or 649506 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2100428022 is about 45830.4268145083. The cubic root of 2100428022 is about 1280.6661616257. Note that the first 3 decimals are identical.

Adding to 2100428022 its reverse (2208240012), we get a palindrome (4308668034).

The spelling of 2100428022 in words is "two billion, one hundred million, four hundred twenty-eight thousand, twenty-two".