20010101120010 has 48 divisors (see below), whose sum is σ = 52026512452200. Its totient is φ = 5336001371520.

The previous prime is 20010101119997. The next prime is 20010101120033. The reversal of 20010101120010 is 1002110101002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19237022316009 + 773078804001 = 4386003^2 + 879249^2 .

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 = 20010101119974 and 20010101120001.

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, 25192416 + ... + 25974564.

Almost surely, 2^{20010101120010} is an apocalyptic number.

20010101120010 is an abundant number, since it is smaller than the sum of its proper divisors (32016411332190).

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

20010101120010 is a wasteful number, since it uses less digits than its factorization.

20010101120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066423 (or 1066420 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20010101120010 its reverse (1002110101002), we get a palindrome (21012211221012).

The spelling of 20010101120010 in words is "twenty trillion, ten billion, one hundred one million, one hundred twenty thousand, ten".