2123021310 has 64 divisors (see below), whose sum is σ = 5167991808. Its totient is φ = 558088064.

The previous prime is 2123021291. The next prime is 2123021311. The reversal of 2123021310 is 131203212.

It is a super-2 number, since 2×2123021310² = 9014438965428232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2123021310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123021311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1924219 + ... + 1925321.

It is an arithmetic number, because the mean of its divisors is an integer number (80749872).

Almost surely, 2^2123021310 is an apocalyptic number.

2123021310 is an abundant number, since it is smaller than the sum of its proper divisors (3044970498).

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

2123021310 is a wasteful number, since it uses less digits than its factorization.

2123021310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2123021310 is about 46076.2553817039. The cubic root of 2123021310 is about 1285.2416306904.

Adding to 2123021310 its reverse (131203212), we get a palindrome (2254224522).

The spelling of 2123021310 in words is "two billion, one hundred twenty-three million, twenty-one thousand, three hundred ten".