2123201070 has 192 divisors, whose sum is σ = 6030910080. Its totient is φ = 516612096.

The previous prime is 2123201051. The next prime is 2123201071. The reversal of 2123201070 is 701023212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123201071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6783234 + ... + 6783546.

It is an arithmetic number, because the mean of its divisors is an integer number (31410990).

Almost surely, 2^2123201070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123201070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3015455040).

2123201070 is an abundant number, since it is smaller than the sum of its proper divisors (3907709010).

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

2123201070 is a wasteful number, since it uses less digits than its factorization.

2123201070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 2123201070 is about 46078.2060197660. The cubic root of 2123201070 is about 1285.2779042335.

Adding to 2123201070 its reverse (701023212), we get a palindrome (2824224282).

The spelling of 2123201070 in words is "two billion, one hundred twenty-three million, two hundred one thousand, seventy".