1020012001 has 16 divisors (see below), whose sum is σ = 1071532800. Its totient is φ = 970127488.

The previous prime is 1020011999. The next prime is 1020012013. The reversal of 1020012001 is 1002100201.

1020012001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1020012001 - 2¹ = 1020011999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020022001) 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, 244731 + ... + 248863.

It is an arithmetic number, because the mean of its divisors is an integer number (66970800).

Almost surely, 2^1020012001 is an apocalyptic number.

It is an amenable number.

1020012001 is a deficient number, since it is larger than the sum of its proper divisors (51520799).

1020012001 is an equidigital number, since it uses as much as digits as its factorization.

1020012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1020012001 is about 31937.6267277329. The cubic root of 1020012001 is about 1006.6266574136.

Adding to 1020012001 its reverse (1002100201), we get a palindrome (2022112202).

It can be divided in two parts, 10200 and 12001, that added together give a square (22201 = 149²).

The spelling of 1020012001 in words is "one billion, twenty million, twelve thousand, one".