2211212020 has 96 divisors (see below), whose sum is σ = 5069675520. Its totient is φ = 807045120.

The previous prime is 2211211949. The next prime is 2211212023. The reversal of 2211212020 is 202121122.

It is a happy number.

2211212020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211212023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3969582 + ... + 3970138.

It is an arithmetic number, because the mean of its divisors is an integer number (52809120).

Almost surely, 2^2211212020 is an apocalyptic number.

2211212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2534837760).

2211212020 is an abundant number, since it is smaller than the sum of its proper divisors (2858463500).

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

2211212020 is a wasteful number, since it uses less digits than its factorization.

2211212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2211212020 is about 47023.5262395325. The cubic root of 2211212020 is about 1302.7971370042.

Adding to 2211212020 its reverse (202121122), we get a palindrome (2413333142).

The spelling of 2211212020 in words is "two billion, two hundred eleven million, two hundred twelve thousand, twenty".