211200021121010 has 16 divisors (see below), whose sum is σ = 382129779150936. Its totient is φ = 84042288196608.

The previous prime is 211200021120857. The next prime is 211200021121027. The reversal of 211200021121010 is 10121120002112.

It can be written as a sum of positive squares in 4 ways, for example, as 185295555253561 + 25904465867449 = 13612331^2 + 5089643^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54715029449 + ... + 54715033308.

Almost surely, 2^{211200021121010} is an apocalyptic number.

211200021121010 is a deficient number, since it is larger than the sum of its proper divisors (170929758029926).

211200021121010 is a wasteful number, since it uses less digits than its factorization.

211200021121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109430062957.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211200021121010 its reverse (10121120002112), we get a palindrome (221321141123122).

The spelling of 211200021121010 in words is "two hundred eleven trillion, two hundred billion, twenty-one million, one hundred twenty-one thousand, ten".