1011001022201 has 4 divisors (see below), whose sum is σ = 1011708512100. Its totient is φ = 1010293532304.

The previous prime is 1011001022159. The next prime is 1011001022221. The reversal of 1011001022201 is 1022201001101.

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 569240070400 + 441760951801 = 754480^2 + 664651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011001022201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011001022221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353742806 + ... + 353745663.

It is an arithmetic number, because the mean of its divisors is an integer number (252927128025).

Almost surely, 2^{1011001022201} is an apocalyptic number.

It is an amenable number.

1011001022201 is a deficient number, since it is larger than the sum of its proper divisors (707489899).

1011001022201 is an equidigital number, since it uses as much as digits as its factorization.

1011001022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707489898.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011001022201 its reverse (1022201001101), we get a palindrome (2033202023302).

The spelling of 1011001022201 in words is "one trillion, eleven billion, one million, twenty-two thousand, two hundred one".