20112122020 has 12 divisors (see below), whose sum is σ = 42235456284. Its totient is φ = 8044848800.

The previous prime is 20112121973. The next prime is 20112122087. The reversal of 20112122020 is 2022121102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10324185664 + 9787936356 = 101608^2 + 98934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502803031 + ... + 502803070.

It is an arithmetic number, because the mean of its divisors is an integer number (3519621357).

Almost surely, 2^20112122020 is an apocalyptic number.

20112122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112122020 is an abundant number, since it is smaller than the sum of its proper divisors (22123334264).

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

20112122020 is a wasteful number, since it uses less digits than its factorization.

20112122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005606110 (or 1005606108 counting only the distinct ones).

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

Adding to 20112122020 its reverse (2022121102), we get a palindrome (22134243122).

The spelling of 20112122020 in words is "twenty billion, one hundred twelve million, one hundred twenty-two thousand, twenty".