1010201102021 has 4 divisors (see below), whose sum is σ = 1010213813772. Its totient is φ = 1010188390272.

The previous prime is 1010201101981. The next prime is 1010201102033. The reversal of 1010201102021 is 1202011020101.

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 360613461121 + 649587640900 = 600511^2 + 805970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010201102021 - 2⁶ = 1010201101957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1010201101993 and 1010201102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010201102041) 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, 6235916 + ... + 6395861.

It is an arithmetic number, because the mean of its divisors is an integer number (252553453443).

Almost surely, 2^{1010201102021} is an apocalyptic number.

It is an amenable number.

1010201102021 is a deficient number, since it is larger than the sum of its proper divisors (12711751).

1010201102021 is an equidigital number, since it uses as much as digits as its factorization.

1010201102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12711750.

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

Adding to 1010201102021 its reverse (1202011020101), we get a palindrome (2212212122122).

The spelling of 1010201102021 in words is "one trillion, ten billion, two hundred one million, one hundred two thousand, twenty-one".