2001021310 has 16 divisors (see below), whose sum is σ = 3621963600. Its totient is φ = 795936256.

The previous prime is 2001021301. The next prime is 2001021317. The reversal of 2001021310 is 131201002.

It is a super-2 number, since 2×2001021310² = 8008172566148232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001021317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557155 + ... + 560734.

It is an arithmetic number, because the mean of its divisors is an integer number (226372725).

Almost surely, 2^2001021310 is an apocalyptic number.

2001021310 is a deficient number, since it is larger than the sum of its proper divisors (1620942290).

2001021310 is a wasteful number, since it uses less digits than its factorization.

2001021310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118075.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001021310 is about 44732.7766855580. The cubic root of 2001021310 is about 1260.1354750612.

Adding to 2001021310 its reverse (131201002), we get a palindrome (2132222312).

The spelling of 2001021310 in words is "two billion, one million, twenty-one thousand, three hundred ten".