2020121111021 has 8 divisors (see below), whose sum is σ = 2187668760480. Its totient is φ = 1854309706992.

The previous prime is 2020121110967. The next prime is 2020121111027. The reversal of 2020121111021 is 1201111210202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020121111021 - 2²² = 2020116916717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020121110987 and 2020121111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020121111027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434058935 + ... + 434063588.

It is an arithmetic number, because the mean of its divisors is an integer number (273458595060).

Almost surely, 2^{2020121111021} is an apocalyptic number.

It is an amenable number.

2020121111021 is a deficient number, since it is larger than the sum of its proper divisors (167547649459).

2020121111021 is a wasteful number, since it uses less digits than its factorization.

2020121111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868122715.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2020121111021 its reverse (1201111210202), we get a palindrome (3221232321223).

The spelling of 2020121111021 in words is "two trillion, twenty billion, one hundred twenty-one million, one hundred eleven thousand, twenty-one".