20110111001210 has 32 divisors (see below), whose sum is σ = 37459287766800. Its totient is φ = 7763993359360.

The previous prime is 20110111001209. The next prime is 20110111001249. The reversal of 20110111001210 is 1210011101102.

It can be written as a sum of positive squares in 8 ways, for example, as 7918218928489 + 12191892072721 = 2813933^2 + 3491689^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20110111001191 and 20110111001200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11075471 + ... + 12762690.

Almost surely, 2^{20110111001210} is an apocalyptic number.

20110111001210 is a deficient number, since it is larger than the sum of its proper divisors (17349176765590).

20110111001210 is a wasteful number, since it uses less digits than its factorization.

20110111001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23841106.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20110111001210 its reverse (1210011101102), we get a palindrome (21320122102312).

The spelling of 20110111001210 in words is "twenty trillion, one hundred ten billion, one hundred eleven million, one thousand, two hundred ten".