1012222020 has 48 divisors (see below), whose sum is σ = 2836249920. Its totient is φ = 269732736.

The previous prime is 1012221971. The next prime is 1012222027. The reversal of 1012222020 is 202222101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1012221987 and 1012222005.

It is not an unprimeable number, because it can be changed into a prime (1012222027) 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, 91551 + ... + 102009.

It is an arithmetic number, because the mean of its divisors is an integer number (59088540).

Almost surely, 2^1012222020 is an apocalyptic number.

1012222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012222020 is an abundant number, since it is smaller than the sum of its proper divisors (1824027900).

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

1012222020 is a wasteful number, since it uses less digits than its factorization.

1012222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12084 (or 12082 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1012222020 is about 31815.4368192549. The cubic root of 1012222020 is about 1004.0575209237.

Adding to 1012222020 its reverse (202222101), we get a palindrome (1214444121).

The spelling of 1012222020 in words is "one billion, twelve million, two hundred twenty-two thousand, twenty".