1011220002001 has 16 divisors (see below), whose sum is σ = 1108125581760. Its totient is φ = 915144995520.

The previous prime is 1011220001999. The next prime is 1011220002043. The reversal of 1011220002001 is 1002000221101.

It is a cyclic number.

It is not a de Polignac number, because 1011220002001 - 2¹ = 1011220001999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011220002601) 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, 20361466 + ... + 20411068.

It is an arithmetic number, because the mean of its divisors is an integer number (69257848860).

Almost surely, 2^{1011220002001} is an apocalyptic number.

1011220002001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011220002001 is a deficient number, since it is larger than the sum of its proper divisors (96905579759).

1011220002001 is a wasteful number, since it uses less digits than its factorization.

1011220002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57936.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1011220002001 its reverse (1002000221101), we get a palindrome (2013220223102).

The spelling of 1011220002001 in words is "one trillion, eleven billion, two hundred twenty million, two thousand, one".