2020121001 has 48 divisors (see below), whose sum is σ = 3028259520. Its totient is φ = 1297121280.

The previous prime is 2020120997. The next prime is 2020121017. The reversal of 2020121001 is 1001210202.

It is not a de Polignac number, because 2020121001 - 2² = 2020120997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2020121501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7860265 + ... + 7860521.

It is an arithmetic number, because the mean of its divisors is an integer number (63088740).

Almost surely, 2^2020121001 is an apocalyptic number.

It is an amenable number.

2020121001 is a deficient number, since it is larger than the sum of its proper divisors (1008138519).

2020121001 is a wasteful number, since it uses less digits than its factorization.

2020121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2020121001 is about 44945.7562067878. The cubic root of 2020121001 is about 1264.1321049855.

Adding to 2020121001 its reverse (1001210202), we get a palindrome (3021331203).

The spelling of 2020121001 in words is "two billion, twenty million, one hundred twenty-one thousand, one".