20022342121 has 2 divisors, whose sum is σ = 20022342122. Its totient is φ = 20022342120.

The previous prime is 20022342103. The next prime is 20022342133. The reversal of 20022342121 is 12124322002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12196993600 + 7825348521 = 110440^2 + 88461^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022342121 - 2⁵ = 20022342089 is a prime.

It is not a weakly prime, because it can be changed into another prime (20022342181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011171060 + 10011171061.

It is an arithmetic number, because the mean of its divisors is an integer number (10011171061).

Almost surely, 2^20022342121 is an apocalyptic number.

It is an amenable number.

20022342121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022342121 is an equidigital number, since it uses as much as digits as its factorization.

20022342121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20022342121 its reverse (12124322002), we get a palindrome (32146664123).

The spelling of 20022342121 in words is "twenty billion, twenty-two million, three hundred forty-two thousand, one hundred twenty-one".