222012122020 has 48 divisors (see below), whose sum is σ = 502242996528. Its totient is φ = 81948556800.

The previous prime is 222012121967. The next prime is 222012122027. The reversal of 222012122020 is 20221210222.

It can be written as a sum of positive squares in 8 ways, for example, as 15845270884 + 206166851136 = 125878^2 + 454056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222012121985 and 222012122003.

It is not an unprimeable number, because it can be changed into a prime (222012122027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728922 + ... + 987598.

It is an arithmetic number, because the mean of its divisors is an integer number (10463395761).

Almost surely, 2^222012122020 is an apocalyptic number.

222012122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012122020 is an abundant number, since it is smaller than the sum of its proper divisors (280230874508).

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

222012122020 is a wasteful number, since it uses less digits than its factorization.

222012122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262000 (or 261998 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222012122020 its reverse (20221210222), we get a palindrome (242233332242).

The spelling of 222012122020 in words is "two hundred twenty-two billion, twelve million, one hundred twenty-two thousand, twenty".