1011020000 has 60 divisors (see below), whose sum is σ = 2487310056. Its totient is φ = 404400000.

The previous prime is 1011019987. The next prime is 1011020009. The reversal of 1011020000 is 201101.

It is a happy number.

It is a super-2 number, since 2×1011020000² = 2044322880800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011020009) 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 9 ways as a sum of consecutive naturals, for example, 5276 + ... + 45275.

Almost surely, 2^1011020000 is an apocalyptic number.

1011020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011020000 is an abundant number, since it is smaller than the sum of its proper divisors (1476290056).

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

1011020000 is an frugal number, since it uses more digits than its factorization.

1011020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50581 (or 50558 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1011020000 is about 31796.5406923458. The cubic root of 1011020000 is about 1003.6599219630.

Adding to 1011020000 its reverse (201101), we get a palindrome (1011221101).

The spelling of 1011020000 in words is "one billion, eleven million, twenty thousand".