211110021010 has 64 divisors (see below), whose sum is σ = 463450595328. Its totient is φ = 67586448384.

The previous prime is 211110020999. The next prime is 211110021077. The reversal of 211110021010 is 10120011112.

It is a Harshad number since it is a multiple of its sum of digits (10).

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 31 ways as a sum of consecutive naturals, for example, 547309 + ... + 849568.

It is an arithmetic number, because the mean of its divisors is an integer number (7241415552).

Almost surely, 2^211110021010 is an apocalyptic number.

211110021010 is an abundant number, since it is smaller than the sum of its proper divisors (252340574318).

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

211110021010 is a wasteful number, since it uses less digits than its factorization.

211110021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397035.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 211110021010 its reverse (10120011112), we get a palindrome (221230032122).

The spelling of 211110021010 in words is "two hundred eleven billion, one hundred ten million, twenty-one thousand, ten".