20022121013 has 2 divisors, whose sum is σ = 20022121014. Its totient is φ = 20022121012.

The previous prime is 20022120973. The next prime is 20022121019. The reversal of 20022121013 is 31012122002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19220495044 + 801625969 = 138638^2 + 28313^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022121013 - 2⁶ = 20022120949 is a prime.

It is a super-2 number, since 2×20022121013² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022121019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011060506 + 10011060507.

It is an arithmetic number, because the mean of its divisors is an integer number (10011060507).

Almost surely, 2^20022121013 is an apocalyptic number.

It is an amenable number.

20022121013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022121013 is an equidigital number, since it uses as much as digits as its factorization.

20022121013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20022121013 its reverse (31012122002), we get a palindrome (51034243015).

The spelling of 20022121013 in words is "twenty billion, twenty-two million, one hundred twenty-one thousand, thirteen".