2020122001221 has 64 divisors (see below), whose sum is σ = 2788747315200. Its totient is φ = 1300151533824.

The previous prime is 2020122001213. The next prime is 2020122001231. The reversal of 2020122001221 is 1221002210202.

It is not a de Polignac number, because 2020122001221 - 2³ = 2020122001213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020122001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020122001231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2055057496 + ... + 2055058478.

It is an arithmetic number, because the mean of its divisors is an integer number (43574176800).

Almost surely, 2^{2020122001221} is an apocalyptic number.

It is an amenable number.

2020122001221 is a deficient number, since it is larger than the sum of its proper divisors (768625313979).

2020122001221 is a wasteful number, since it uses less digits than its factorization.

2020122001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2020122001221 its reverse (1221002210202), we get a palindrome (3241124211423).

The spelling of 2020122001221 in words is "two trillion, twenty billion, one hundred twenty-two million, one thousand, two hundred twenty-one".