1011020001 has 8 divisors (see below), whose sum is σ = 1418975520. Its totient is φ = 638538912.

The previous prime is 1011019987. The next prime is 1011020009. The reversal of 1011020001 is 1000201101.

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

It is not a de Polignac number, because 1011020001 - 2⁵ = 1011019969 is a prime.

It is a super-2 number, since 2×1011020001² = 2044322884844080002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011020009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8868540 + ... + 8868653.

It is an arithmetic number, because the mean of its divisors is an integer number (177371940).

Almost surely, 2^1011020001 is an apocalyptic number.

It is an amenable number.

1011020001 is a deficient number, since it is larger than the sum of its proper divisors (407955519).

1011020001 is a wasteful number, since it uses less digits than its factorization.

1011020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17737215.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1011020001 is about 31796.5407080707. The cubic root of 1011020001 is about 1003.6599222939.

Adding to 1011020001 its reverse (1000201101), we get a palindrome (2011221102).

The spelling of 1011020001 in words is "one billion, eleven million, twenty thousand, one".