211010113220 has 24 divisors (see below), whose sum is σ = 445943672664. Its totient is φ = 83866438656.

The previous prime is 211010113211. The next prime is 211010113253. The reversal of 211010113220 is 22311010112.

It can be written as a sum of positive squares in 4 ways, for example, as 61606218436 + 149403894784 = 248206^2 + 386528^2 .

It is a super-2 number, since 2×211010113220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211010113195 and 211010113204.

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, 33597197 + ... + 33603476.

It is an arithmetic number, because the mean of its divisors is an integer number (18580986361).

Almost surely, 2^211010113220 is an apocalyptic number.

211010113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211010113220 is an abundant number, since it is smaller than the sum of its proper divisors (234933559444).

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

211010113220 is a wasteful number, since it uses less digits than its factorization.

211010113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67200839 (or 67200837 counting only the distinct ones).

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

Adding to 211010113220 its reverse (22311010112), we get a palindrome (233321123332).

The spelling of 211010113220 in words is "two hundred eleven billion, ten million, one hundred thirteen thousand, two hundred twenty".