1011010220201 has 4 divisors (see below), whose sum is σ = 1013222496852. Its totient is φ = 1008797943552.

The previous prime is 1011010220173. The next prime is 1011010220221. The reversal of 1011010220201 is 1020220101101.

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 776555738176 + 234454482025 = 881224^2 + 484205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011010220201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1011010220221) 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, 1106137640 + ... + 1106138553.

It is an arithmetic number, because the mean of its divisors is an integer number (253305624213).

Almost surely, 2^{1011010220201} is an apocalyptic number.

It is an amenable number.

1011010220201 is a deficient number, since it is larger than the sum of its proper divisors (2212276651).

1011010220201 is an equidigital number, since it uses as much as digits as its factorization.

1011010220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212276650.

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

Adding to 1011010220201 its reverse (1020220101101), we get a palindrome (2031230321302).

The spelling of 1011010220201 in words is "one trillion, eleven billion, ten million, two hundred twenty thousand, two hundred one".