210023001320 has 128 divisors (see below), whose sum is σ = 538161408000. Its totient is φ = 73019316480.

The previous prime is 210023001317. The next prime is 210023001329. The reversal of 210023001320 is 23100320012.

It is a happy number.

It is a super-2 number, since 2×210023001320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210023001295 and 210023001304.

It is not an unprimeable number, because it can be changed into a prime (210023001329) 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, 42693821 + ... + 42698739.

It is an arithmetic number, because the mean of its divisors is an integer number (4204386000).

Almost surely, 2^210023001320 is an apocalyptic number.

210023001320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210023001320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269080704000).

210023001320 is an abundant number, since it is smaller than the sum of its proper divisors (328138406680).

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

210023001320 is a wasteful number, since it uses less digits than its factorization.

210023001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183 (or 9179 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 210023001320 its reverse (23100320012), we get a palindrome (233123321332).

The spelling of 210023001320 in words is "two hundred ten billion, twenty-three million, one thousand, three hundred twenty".