1012222420 has 24 divisors (see below), whose sum is σ = 2318910048. Its totient is φ = 368080800.

The previous prime is 1012222417. The next prime is 1012222427. The reversal of 1012222420 is 242222101.

1012222420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1012222394 and 1012222403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012222427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2300286 + ... + 2300725.

It is an arithmetic number, because the mean of its divisors is an integer number (96621252).

Almost surely, 2^1012222420 is an apocalyptic number.

1012222420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012222420 is an abundant number, since it is smaller than the sum of its proper divisors (1306687628).

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

1012222420 is a wasteful number, since it uses less digits than its factorization.

1012222420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601031 (or 4601029 counting only the distinct ones).

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

The square root of 1012222420 is about 31815.4431055109. The cubic root of 1012222420 is about 1004.0576531815.

Adding to 1012222420 its reverse (242222101), we get a palindrome (1254444521).

The spelling of 1012222420 in words is "one billion, twelve million, two hundred twenty-two thousand, four hundred twenty".