1011030020 has 144 divisors (see below), whose sum is σ = 2872902144. Its totient is φ = 290822400.

The previous prime is 1011030017. The next prime is 1011030023. The reversal of 1011030020 is 200301101.

It is an interprime number because it is at equal distance from previous prime (1011030017) and next prime (1011030023).

It is not an unprimeable number, because it can be changed into a prime (1011030023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217925 + ... + 222515.

Almost surely, 2^1011030020 is an apocalyptic number.

1011030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011030020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436451072).

1011030020 is an abundant number, since it is smaller than the sum of its proper divisors (1861872124).

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

1011030020 is a wasteful number, since it uses less digits than its factorization.

1011030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4629 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1011030020 is about 31796.6982562655. The cubic root of 1011030020 is about 1003.6632376373.

Adding to 1011030020 its reverse (200301101), we get a palindrome (1211331121).

The spelling of 1011030020 in words is "one billion, eleven million, thirty thousand, twenty".