2211111210020 has 24 divisors (see below), whose sum is σ = 4695505831800. Its totient is φ = 874506904832.

The previous prime is 2211111210019. The next prime is 2211111210067. The reversal of 2211111210020 is 200121111122.

It can be written as a sum of positive squares in 4 ways, for example, as 41429345764 + 2169681864256 = 203542^2 + 1472984^2 .

It is a super-2 number, since 2×2211111210020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211111209977 and 2211111210004.

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, 621096875 + ... + 621100434.

It is an arithmetic number, because the mean of its divisors is an integer number (195646076325).

Almost surely, 2^{2211111210020} is an apocalyptic number.

2211111210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211111210020 is an abundant number, since it is smaller than the sum of its proper divisors (2484394621780).

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

2211111210020 is a wasteful number, since it uses less digits than its factorization.

2211111210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242197407 (or 1242197405 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2211111210020 its reverse (200121111122), we get a palindrome (2411232321142).

The spelling of 2211111210020 in words is "two trillion, two hundred eleven billion, one hundred eleven million, two hundred ten thousand, twenty".