20011000011210 has 72 divisors (see below), whose sum is σ = 56338661612844. Its totient is φ = 4925784614400.

The previous prime is 20011000011137. The next prime is 20011000011229. The reversal of 20011000011210 is 1211000011002.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5635671837849 + 14375328173361 = 2373957^2 + 3791481^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20011000011192 and 20011000011201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 657808591 + ... + 657839010.

Almost surely, 2^{20011000011210} is an apocalyptic number.

20011000011210 is an abundant number, since it is smaller than the sum of its proper divisors (36327661601634).

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

20011000011210 is a wasteful number, since it uses less digits than its factorization.

20011000011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315647640 (or 1315647624 counting only the distinct ones).

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

Adding to 20011000011210 its reverse (1211000011002), we get a palindrome (21222000022212).

The spelling of 20011000011210 in words is "twenty trillion, eleven billion, eleven thousand, two hundred ten".