1020202005101 has 4 divisors (see below), whose sum is σ = 1080213887772. Its totient is φ = 960190122432.

The previous prime is 1020202005083. The next prime is 1020202005103. The reversal of 1020202005101 is 1015002020201.

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 717400530025 + 302801475076 = 846995^2 + 550274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020202005101 - 2²⁶ = 1020134896237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202005103) 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, 30005941310 + ... + 30005941343.

It is an arithmetic number, because the mean of its divisors is an integer number (270053471943).

Almost surely, 2^{1020202005101} is an apocalyptic number.

It is an amenable number.

1020202005101 is a deficient number, since it is larger than the sum of its proper divisors (60011882671).

1020202005101 is an equidigital number, since it uses as much as digits as its factorization.

1020202005101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60011882670.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 1020202005101 its reverse (1015002020201), we get a palindrome (2035204025302).

The spelling of 1020202005101 in words is "one trillion, twenty billion, two hundred two million, five thousand, one hundred one".