1020220332 has 12 divisors (see below), whose sum is σ = 2380514136. Its totient is φ = 340073440.

The previous prime is 1020220321. The next prime is 1020220339. The reversal of 1020220332 is 2330220201.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1020220339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42509169 + ... + 42509192.

It is an arithmetic number, because the mean of its divisors is an integer number (198376178).

Almost surely, 2^1020220332 is an apocalyptic number.

1020220332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020220332 is an abundant number, since it is smaller than the sum of its proper divisors (1360293804).

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

1020220332 is a wasteful number, since it uses less digits than its factorization.

1020220332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85018368 (or 85018366 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1020220332 is about 31940.8880903459. Note that the first 3 decimals coincide. The cubic root of 1020220332 is about 1006.6951851245.

Adding to 1020220332 its reverse (2330220201), we get a palindrome (3350440533).

The spelling of 1020220332 in words is "one billion, twenty million, two hundred twenty thousand, three hundred thirty-two".