2020010121221 has 4 divisors (see below), whose sum is σ = 2020029666432. Its totient is φ = 2019990576012.

The previous prime is 2020010121191. The next prime is 2020010121247. The reversal of 2020010121221 is 1221210100202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020010121221 is a prime.

It is a super-2 number, since 2×2020010121221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020010121196 and 2020010121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020010121251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9616751 + ... + 9824556.

It is an arithmetic number, because the mean of its divisors is an integer number (505007416608).

Almost surely, 2^{2020010121221} is an apocalyptic number.

It is an amenable number.

2020010121221 is a deficient number, since it is larger than the sum of its proper divisors (19545211).

2020010121221 is a wasteful number, since it uses less digits than its factorization.

2020010121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19545210.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2020010121221 its reverse (1221210100202), we get a palindrome (3241220221423).

The spelling of 2020010121221 in words is "two trillion, twenty billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".