20112212020 has 12 divisors (see below), whose sum is σ = 42235645284. Its totient is φ = 8044884800.

The previous prime is 20112212017. The next prime is 20112212027. The reversal of 20112212020 is 2021221102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9190289956 + 10921922064 = 95866^2 + 104508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112212027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502805281 + ... + 502805320.

It is an arithmetic number, because the mean of its divisors is an integer number (3519637107).

Almost surely, 2^20112212020 is an apocalyptic number.

20112212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112212020 is an abundant number, since it is smaller than the sum of its proper divisors (22123433264).

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

20112212020 is a wasteful number, since it uses less digits than its factorization.

20112212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005610610 (or 1005610608 counting only the distinct ones).

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

Adding to 20112212020 its reverse (2021221102), we get a palindrome (22133433122).

The spelling of 20112212020 in words is "twenty billion, one hundred twelve million, two hundred twelve thousand, twenty".