2020012121121 has 16 divisors (see below), whose sum is σ = 2707277798400. Its totient is φ = 1339712565840.

The previous prime is 2020012121077. The next prime is 2020012121159. The reversal of 2020012121121 is 1211212100202.

It is not a de Polignac number, because 2020012121121 - 2²² = 2020007926817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020012121121.

It is not an unprimeable number, because it can be changed into a prime (2020012121921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3918996 + ... + 4404378.

It is an arithmetic number, because the mean of its divisors is an integer number (169204862400).

Almost surely, 2^{2020012121121} is an apocalyptic number.

It is an amenable number.

2020012121121 is a deficient number, since it is larger than the sum of its proper divisors (687265677279).

2020012121121 is a wasteful number, since it uses less digits than its factorization.

2020012121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492556.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2020012121121 its reverse (1211212100202), we get a palindrome (3231224221323).

The spelling of 2020012121121 in words is "two trillion, twenty billion, twelve million, one hundred twenty-one thousand, one hundred twenty-one".