2020202121 has 16 divisors (see below), whose sum is σ = 3121763328. Its totient is φ = 1138141200.

The previous prime is 2020202111. The next prime is 2020202131. The reversal of 2020202121 is 1212020202.

It is an interprime number because it is at equal distance from previous prime (2020202111) and next prime (2020202131).

It is not a de Polignac number, because 2020202121 - 2¹⁰ = 2020201097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020202097 and 2020202106.

It is not an unprimeable number, because it can be changed into a prime (2020202111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675975 + ... + 678956.

It is an arithmetic number, because the mean of its divisors is an integer number (195110208).

Almost surely, 2^2020202121 is an apocalyptic number.

2020202121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2020202121 is a deficient number, since it is larger than the sum of its proper divisors (1101561207).

2020202121 is a wasteful number, since it uses less digits than its factorization.

2020202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355012.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2020202121 is about 44946.6586188562. The cubic root of 2020202121 is about 1264.1490255930.

Adding to 2020202121 its reverse (1212020202), we get a palindrome (3232222323).

It can be divided in two parts, 2020202 and 121, that multiplied together give a palindrome (244444442).

The spelling of 2020202121 in words is "two billion, twenty million, two hundred two thousand, one hundred twenty-one".