210011011220 has 24 divisors (see below), whose sum is σ = 441069179208. Its totient is φ = 83995632000.

The previous prime is 210011011207. The next prime is 210011011237. The reversal of 210011011220 is 22110110012.

It can be written as a sum of positive squares in 4 ways, for example, as 4724087824 + 205286923396 = 68732^2 + 453086^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 350231 + ... + 736670.

It is an arithmetic number, because the mean of its divisors is an integer number (18377882467).

Almost surely, 2^210011011220 is an apocalyptic number.

210011011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210011011220 is an abundant number, since it is smaller than the sum of its proper divisors (231058167988).

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

210011011220 is a wasteful number, since it uses less digits than its factorization.

210011011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096571 (or 1096569 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210011011220 its reverse (22110110012), we get a palindrome (232121121232).

The spelling of 210011011220 in words is "two hundred ten billion, eleven million, eleven thousand, two hundred twenty".