1020220136 has 16 divisors (see below), whose sum is σ = 2060060100. Its totient is φ = 470870784.

The previous prime is 1020220127. The next prime is 1020220151. The reversal of 1020220136 is 6310220201.

It can be written as a sum of positive squares in 2 ways, for example, as 1017227236 + 2992900 = 31894^2 + 1730^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4904801 + ... + 4905008.

Almost surely, 2^1020220136 is an apocalyptic number.

It is an amenable number.

1020220136 is an abundant number, since it is smaller than the sum of its proper divisors (1039839964).

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

1020220136 is a wasteful number, since it uses less digits than its factorization.

1020220136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9809828 (or 9809824 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1020220136 is about 31940.8850221781. The cubic root of 1020220136 is about 1006.6951206573.

Adding to 1020220136 its reverse (6310220201), we get a palindrome (7330440337).

The spelling of 1020220136 in words is "one billion, twenty million, two hundred twenty thousand, one hundred thirty-six".