1020201121001 has 16 divisors (see below), whose sum is σ = 1057691529600. Its totient is φ = 983531134080.

The previous prime is 1020201120977. The next prime is 1020201121097. The reversal of 1020201121001 is 1001211020201.

It is a cyclic number.

It is not a de Polignac number, because 1020201121001 - 2²⁶ = 1020134012137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020201129001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186125 + ... + 1440501.

It is an arithmetic number, because the mean of its divisors is an integer number (66105720600).

Almost surely, 2^{1020201121001} is an apocalyptic number.

It is an amenable number.

1020201121001 is a deficient number, since it is larger than the sum of its proper divisors (37490408599).

1020201121001 is a wasteful number, since it uses less digits than its factorization.

1020201121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254704.

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

Adding to 1020201121001 its reverse (1001211020201), we get a palindrome (2021412141202).

The spelling of 1020201121001 in words is "one trillion, twenty billion, two hundred one million, one hundred twenty-one thousand, one".