1201023020 has 12 divisors (see below), whose sum is σ = 2522148384. Its totient is φ = 480409200.

The previous prime is 1201023011. The next prime is 1201023029. The reversal of 1201023020 is 203201021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1201023011) and next prime (1201023029).

It is a junction number, because it is equal to n+sod(n) for n = 1201022992 and 1201023010.

It is not an unprimeable number, because it can be changed into a prime (1201023029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30025556 + ... + 30025595.

It is an arithmetic number, because the mean of its divisors is an integer number (210179032).

Almost surely, 2^1201023020 is an apocalyptic number.

1201023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201023020 is an abundant number, since it is smaller than the sum of its proper divisors (1321125364).

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

1201023020 is a wasteful number, since it uses less digits than its factorization.

1201023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60051160 (or 60051158 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1201023020 is about 34655.7790274580. The cubic root of 1201023020 is about 1062.9604614565.

Adding to 1201023020 its reverse (203201021), we get a palindrome (1404224041).

The spelling of 1201023020 in words is "one billion, two hundred one million, twenty-three thousand, twenty".