211111100020010 has 16 divisors (see below), whose sum is σ = 380004813045000. Its totient is φ = 84443366006016.

The previous prime is 211111100020003. The next prime is 211111100020021. The reversal of 211111100020010 is 10020001111112.

It can be written as a sum of positive squares in 4 ways, for example, as 83583971450329 + 127527128569681 = 9142427^2 + 11292791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211111100019973 and 211111100020000.

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 7 ways as a sum of consecutive naturals, for example, 133424435 + ... + 134997414.

Almost surely, 2^{211111100020010} is an apocalyptic number.

211111100020010 is a deficient number, since it is larger than the sum of its proper divisors (168893713024990).

211111100020010 is a wasteful number, since it uses less digits than its factorization.

211111100020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268500505.

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

Adding to 211111100020010 its reverse (10020001111112), we get a palindrome (221131101131122).

The spelling of 211111100020010 in words is "two hundred eleven trillion, one hundred eleven billion, one hundred million, twenty thousand, ten".