1020011122201 has 4 divisors (see below), whose sum is σ = 1020216402100. Its totient is φ = 1019805842304.

The previous prime is 1020011122159. The next prime is 1020011122211. The reversal of 1020011122201 is 1022211100201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135516015625 + 884495106576 = 368125^2 + 940476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020011122201 - 2¹³ = 1020011114009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020011122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102632496 + ... + 102642433.

It is an arithmetic number, because the mean of its divisors is an integer number (255054100525).

Almost surely, 2^{1020011122201} is an apocalyptic number.

It is an amenable number.

1020011122201 is a deficient number, since it is larger than the sum of its proper divisors (205279899).

1020011122201 is an equidigital number, since it uses as much as digits as its factorization.

1020011122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205279898.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020011122201 its reverse (1022211100201), we get a palindrome (2042222222402).

The spelling of 1020011122201 in words is "one trillion, twenty billion, eleven million, one hundred twenty-two thousand, two hundred one".