2042022121 has 2 divisors, whose sum is σ = 2042022122. Its totient is φ = 2042022120.

The previous prime is 2042022091. The next prime is 2042022137. The reversal of 2042022121 is 1212202402.

It is an a-pointer prime, because the next prime (2042022137) can be obtained adding 2042022121 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1917476521 + 124545600 = 43789^2 + 11160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042022121 - 2⁹ = 2042021609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2042022095 and 2042022104.

It is not a weakly prime, because it can be changed into another prime (2042022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021011060 + 1021011061.

It is an arithmetic number, because the mean of its divisors is an integer number (1021011061).

Almost surely, 2^2042022121 is an apocalyptic number.

It is an amenable number.

2042022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042022121 is an equidigital number, since it uses as much as digits as its factorization.

2042022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2042022121 is about 45188.7388737504. The cubic root of 2042022121 is about 1268.6840526247.

Adding to 2042022121 its reverse (1212202402), we get a palindrome (3254224523).

The spelling of 2042022121 in words is "two billion, forty-two million, twenty-two thousand, one hundred twenty-one".