211011221010 has 64 divisors (see below), whose sum is σ = 511566295680. Its totient is φ = 55698892800.

The previous prime is 211011220967. The next prime is 211011221021. The reversal of 211011221010 is 10122110112.

211011221010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20535234 + ... + 20545506.

It is an arithmetic number, because the mean of its divisors is an integer number (7993223370).

Almost surely, 2^211011221010 is an apocalyptic number.

211011221010 is an abundant number, since it is smaller than the sum of its proper divisors (300555074670).

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

211011221010 is a wasteful number, since it uses less digits than its factorization.

211011221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17163.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211011221010 its reverse (10122110112), we get a palindrome (221133331122).

The spelling of 211011221010 in words is "two hundred eleven billion, eleven million, two hundred twenty-one thousand, ten".