1012435220 has 12 divisors (see below), whose sum is σ = 2126114004. Its totient is φ = 404974080.

The previous prime is 1012435213. The next prime is 1012435241. The reversal of 1012435220 is 225342101.

It can be written as a sum of positive squares in 2 ways, for example, as 134142724 + 878292496 = 11582^2 + 29636^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 50621761 = 1012435220 / (1 + 0 + 1 + 2 + 4 + 3 + 5 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1012435192 and 1012435201.

It is a congruent number.

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, 25310861 + ... + 25310900.

It is an arithmetic number, because the mean of its divisors is an integer number (177176167).

Almost surely, 2^1012435220 is an apocalyptic number.

1012435220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012435220 is an abundant number, since it is smaller than the sum of its proper divisors (1113678784).

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

1012435220 is a wasteful number, since it uses less digits than its factorization.

1012435220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50621770 (or 50621768 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1012435220 is about 31818.7872176172. The cubic root of 1012435220 is about 1004.1280094238.

Adding to 1012435220 its reverse (225342101), we get a palindrome (1237777321).

The spelling of 1012435220 in words is "one billion, twelve million, four hundred thirty-five thousand, two hundred twenty".