20001003210 has 48 divisors (see below), whose sum is σ = 52010851464. Its totient is φ = 5332755456.

The previous prime is 20001003203. The next prime is 20001003257. The reversal of 20001003210 is 1230010002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7470663489 + 12530339721 = 86433^2 + 111939^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001003192 and 20001003201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 727474 + ... + 754466.

Almost surely, 2^20001003210 is an apocalyptic number.

20001003210 is an abundant number, since it is smaller than the sum of its proper divisors (32009848254).

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

20001003210 is a wasteful number, since it uses less digits than its factorization.

20001003210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35239 (or 35236 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20001003210 its reverse (1230010002), we get a palindrome (21231013212).

The spelling of 20001003210 in words is "twenty billion, one million, three thousand, two hundred ten".