1020011501 has 2 divisors, whose sum is σ = 1020011502. Its totient is φ = 1020011500.

The previous prime is 1020011497. The next prime is 1020011527. The reversal of 1020011501 is 1051100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715509001 + 304502500 = 26749^2 + 17450^2 .

It is an emirp because it is prime and its reverse (1051100201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020011501 - 2² = 1020011497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020011701) 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 as a sum of consecutive naturals, namely, 510005750 + 510005751.

It is an arithmetic number, because the mean of its divisors is an integer number (510005751).

Almost surely, 2^1020011501 is an apocalyptic number.

It is an amenable number.

1020011501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020011501 is an equidigital number, since it uses as much as digits as its factorization.

1020011501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1020011501 is about 31937.6188999744. The cubic root of 1020011501 is about 1006.6264929341.

Adding to 1020011501 its reverse (1051100201), we get a palindrome (2071111702).

The spelling of 1020011501 in words is "one billion, twenty million, eleven thousand, five hundred one".