1020020501 has 4 divisors (see below), whose sum is σ = 1043741952. Its totient is φ = 996299052.

The previous prime is 1020020483. The next prime is 1020020527. The reversal of 1020020501 is 1050200201.

1020020501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1050200201 = 233 ⋅4507297.

It is a cyclic number.

It is not a de Polignac number, because 1020020501 - 2¹⁸ = 1019758357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020020531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11860661 + ... + 11860746.

It is an arithmetic number, because the mean of its divisors is an integer number (260935488).

Almost surely, 2^1020020501 is an apocalyptic number.

It is an amenable number.

1020020501 is a deficient number, since it is larger than the sum of its proper divisors (23721451).

1020020501 is an equidigital number, since it uses as much as digits as its factorization.

1020020501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23721450.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1020020501 is about 31937.7597993347. The cubic root of 1020020501 is about 1006.6294535581.

Adding to 1020020501 its reverse (1050200201), we get a palindrome (2070220702).

The spelling of 1020020501 in words is "one billion, twenty million, twenty thousand, five hundred one".