1021020201011 has 4 divisors (see below), whose sum is σ = 1021763844192. Its totient is φ = 1020276557832.

The previous prime is 1021020200999. The next prime is 1021020201041. The reversal of 1021020201011 is 1101020201201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021020201011 - 2²⁶ = 1020953092147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021020200983 and 1021020201001.

It is not an unprimeable number, because it can be changed into a prime (1021020201041) 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, 371819531 + ... + 371822276.

It is an arithmetic number, because the mean of its divisors is an integer number (255440961048).

Almost surely, 2^{1021020201011} is an apocalyptic number.

1021020201011 is a deficient number, since it is larger than the sum of its proper divisors (743643181).

1021020201011 is an equidigital number, since it uses as much as digits as its factorization.

1021020201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743643180.

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

Adding to 1021020201011 its reverse (1101020201201), we get a palindrome (2122040402212).

The spelling of 1021020201011 in words is "one trillion, twenty-one billion, twenty million, two hundred one thousand, eleven".