2020121220121 has 8 divisors (see below), whose sum is σ = 2051915557824. Its totient is φ = 1988419713840.

The previous prime is 2020121220109. The next prime is 2020121220191. The reversal of 2020121220121 is 1210221210202.

It is a happy number.

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 2020121220121 - 2¹³ = 2020121211929 is a prime.

It is a super-4 number, since 4×2020121220121⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020121220095 and 2020121220104.

It is not an unprimeable number, because it can be changed into a prime (2020121220191) 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, 23163991 + ... + 23251036.

It is an arithmetic number, because the mean of its divisors is an integer number (256489444728).

Almost surely, 2^{2020121220121} is an apocalyptic number.

It is an amenable number.

2020121220121 is a deficient number, since it is larger than the sum of its proper divisors (31794337703).

2020121220121 is an equidigital number, since it uses as much as digits as its factorization.

2020121220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46415711.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2020121220121 its reverse (1210221210202), we get a palindrome (3230342430323).

The spelling of 2020121220121 in words is "two trillion, twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-one".