1012011020 has 48 divisors (see below), whose sum is σ = 2302600608. Its totient is φ = 372126720.

The previous prime is 1012010981. The next prime is 1012011023. The reversal of 1012011020 is 201102101.

It is a junction number, because it is equal to n+sod(n) for n = 1012010989 and 1012011007.

It is not an unprimeable number, because it can be changed into a prime (1012011023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19991 + ... + 49230.

It is an arithmetic number, because the mean of its divisors is an integer number (47970846).

Almost surely, 2^1012011020 is an apocalyptic number.

1012011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012011020 is an abundant number, since it is smaller than the sum of its proper divisors (1290589588).

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

1012011020 is a wasteful number, since it uses less digits than its factorization.

1012011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69290 (or 69288 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1012011020 is about 31812.1206460682. The cubic root of 1012011020 is about 1003.9877500450.

Adding to 1012011020 its reverse (201102101), we get a palindrome (1213113121).

The spelling of 1012011020 in words is "one billion, twelve million, eleven thousand, twenty".