20100201012 has 72 divisors (see below), whose sum is σ = 53037711272. Its totient is φ = 6412089600.

The previous prime is 20100201001. The next prime is 20100201029. The reversal of 20100201012 is 21010200102.

It can be written as a sum of positive squares in 4 ways, for example, as 1046263716 + 19053937296 = 32346^2 + 138036^2 .

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 = 20100200985 and 20100201003.

It is a congruent number.

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, 42439 + ... + 204942.

Almost surely, 2^20100201012 is an apocalyptic number.

It is an amenable number.

20100201012 is an abundant number, since it is smaller than the sum of its proper divisors (32937510260).

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

20100201012 is a wasteful number, since it uses less digits than its factorization.

20100201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247489 (or 247484 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20100201012 its reverse (21010200102), we get a palindrome (41110401114).

The spelling of 20100201012 in words is "twenty billion, one hundred million, two hundred one thousand, twelve".