1020202102201 has 4 divisors (see below), whose sum is σ = 1027648833012. Its totient is φ = 1012755371392.

The previous prime is 1020202102111. The next prime is 1020202102319. The reversal of 1020202102201 is 1022012020201.

It is a happy number.

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 205298703801 + 814903398400 = 453099^2 + 902720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020202102201 - 2⁹ = 1020202101689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020202172201) 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, 3723365200 + ... + 3723365473.

It is an arithmetic number, because the mean of its divisors is an integer number (256912208253).

Almost surely, 2^{1020202102201} is an apocalyptic number.

It is an amenable number.

1020202102201 is a deficient number, since it is larger than the sum of its proper divisors (7446730811).

1020202102201 is an equidigital number, since it uses as much as digits as its factorization.

1020202102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7446730810.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020202102201 its reverse (1022012020201), we get a palindrome (2042214122402).

The spelling of 1020202102201 in words is "one trillion, twenty billion, two hundred two million, one hundred two thousand, two hundred one".