1202011020 has 72 divisors (see below), whose sum is σ = 4166975904. Its totient is φ = 274745088.

The previous prime is 1202010989. The next prime is 1202011033. The reversal of 1202011020 is 201102021.

1202011020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1202010993 and 1202011011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475729 + ... + 478248.

Almost surely, 2^1202011020 is an apocalyptic number.

1202011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202011020 is an abundant number, since it is smaller than the sum of its proper divisors (2964964884).

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

1202011020 is a wasteful number, since it uses less digits than its factorization.

1202011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953999 (or 953994 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1202011020 is about 34670.0305739698. The cubic root of 1202011020 is about 1063.2518566734.

Adding to 1202011020 its reverse (201102021), we get a palindrome (1403113041).

The spelling of 1202011020 in words is "one billion, two hundred two million, eleven thousand, twenty".