2211102020 has 24 divisors (see below), whose sum is σ = 4647547800. Its totient is φ = 883634432.

The previous prime is 2211102017. The next prime is 2211102031. The reversal of 2211102020 is 202011122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12054784 + 2199047236 = 3472^2 + 46894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2211101992 and 2211102010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27665 + ... + 72024.

It is an arithmetic number, because the mean of its divisors is an integer number (193647825).

Almost surely, 2^2211102020 is an apocalyptic number.

2211102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211102020 is an abundant number, since it is smaller than the sum of its proper divisors (2436445780).

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

2211102020 is a wasteful number, since it uses less digits than its factorization.

2211102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100807 (or 100805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2211102020 is about 47022.3565976866. The cubic root of 2211102020 is about 1302.7755334582.

Adding to 2211102020 its reverse (202011122), we get a palindrome (2413113142).

The spelling of 2211102020 in words is "two billion, two hundred eleven million, one hundred two thousand, twenty".