1020012501 has 8 divisors (see below), whose sum is σ = 1360255744. Its totient is φ = 679888800.

The previous prime is 1020012493. The next prime is 1020012571. The reversal of 1020012501 is 1052100201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020012501 - 2³ = 1020012493 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 (1020012571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7600 + ... + 45801.

It is an arithmetic number, because the mean of its divisors is an integer number (170031968).

Almost surely, 2^1020012501 is an apocalyptic number.

It is an amenable number.

1020012501 is a deficient number, since it is larger than the sum of its proper divisors (340243243).

1020012501 is an equidigital number, since it uses as much as digits as its factorization.

1020012501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59771.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1020012501 is about 31937.6345554895. The cubic root of 1020012501 is about 1006.6268218931.

Adding to 1020012501 its reverse (1052100201), we get a palindrome (2072112702).

The spelling of 1020012501 in words is "one billion, twenty million, twelve thousand, five hundred one".