2211321020 has 24 divisors (see below), whose sum is σ = 4649845200. Its totient is φ = 883372032.

The previous prime is 2211321011. The next prime is 2211321029. The reversal of 2211321020 is 201231122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2211321011) and next prime (2211321029).

It is a junction number, because it is equal to n+sod(n) for n = 2211320986 and 2211321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211321029) 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, 56510 + ... + 87269.

It is an arithmetic number, because the mean of its divisors is an integer number (193743550).

Almost surely, 2^2211321020 is an apocalyptic number.

2211321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211321020 is an abundant number, since it is smaller than the sum of its proper divisors (2438524180).

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

2211321020 is a wasteful number, since it uses less digits than its factorization.

2211321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144557 (or 144555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2211321020 is about 47024.6852195738. The cubic root of 2211321020 is about 1302.8185434475.

Adding to 2211321020 its reverse (201231122), we get a palindrome (2412552142).

The spelling of 2211321020 in words is "two billion, two hundred eleven million, three hundred twenty-one thousand, twenty".