211220311010 has 16 divisors (see below), whose sum is σ = 380207420856. Its totient is φ = 84485710848.

The previous prime is 211220310997. The next prime is 211220311019. The reversal of 211220311010 is 10113022112.

It can be written as a sum of positive squares in 4 ways, for example, as 206936739409 + 4283571601 = 454903^2 + 65449^2 .

It is a super-2 number, since 2×211220311010² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211220311019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90092 + ... + 656168.

Almost surely, 2^211220311010 is an apocalyptic number.

211220311010 is a deficient number, since it is larger than the sum of its proper divisors (168987109846).

211220311010 is a wasteful number, since it uses less digits than its factorization.

211220311010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603397.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211220311010 its reverse (10113022112), we get a palindrome (221333333122).

The spelling of 211220311010 in words is "two hundred eleven billion, two hundred twenty million, three hundred eleven thousand, ten".