211131130220330 has 16 divisors (see below), whose sum is σ = 381163737768840. Its totient is φ = 84201851338752.

The previous prime is 211131130220321. The next prime is 211131130220347. The reversal of 211131130220330 is 33022031131112.

It can be written as a sum of positive squares in 4 ways, for example, as 84579272496601 + 126551857723729 = 9196699^2 + 11249527^2 .

It is a super-2 number, since 2×211131130220330² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211131130220296 and 211131130220305.

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, 31325090135 + ... + 31325096874.

Almost surely, 2^{211131130220330} is an apocalyptic number.

211131130220330 is a deficient number, since it is larger than the sum of its proper divisors (170032607548510).

211131130220330 is a wasteful number, since it uses less digits than its factorization.

211131130220330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62650187353.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 211131130220330 its reverse (33022031131112), we get a palindrome (244153161351442).

The spelling of 211131130220330 in words is "two hundred eleven trillion, one hundred thirty-one billion, one hundred thirty million, two hundred twenty thousand, three hundred thirty".