2022002212121 has 6 divisors (see below), whose sum is σ = 2134024495722. Its totient is φ = 1915581042720.

The previous prime is 2022002212057. The next prime is 2022002212127. The reversal of 2022002212121 is 1212122002202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1587801606400 + 434200605721 = 1260080^2 + 658939^2 .

It is not a de Polignac number, because 2022002212121 - 2⁶ = 2022002212057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2022002212121.

It is not an unprimeable number, because it can be changed into a prime (2022002212127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2800556720 + ... + 2800557441.

It is an arithmetic number, because the mean of its divisors is an integer number (355670749287).

Almost surely, 2^{2022002212121} is an apocalyptic number.

It is an amenable number.

2022002212121 is a deficient number, since it is larger than the sum of its proper divisors (112022283601).

2022002212121 is an equidigital number, since it uses as much as digits as its factorization.

2022002212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601114199 (or 5601114180 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2022002212121 its reverse (1212122002202), we get a palindrome (3234124214323).

The spelling of 2022002212121 in words is "two trillion, twenty-two billion, two million, two hundred twelve thousand, one hundred twenty-one".