20122030189 has 2 divisors, whose sum is σ = 20122030190. Its totient is φ = 20122030188.

The previous prime is 20122030169. The next prime is 20122030207. The reversal of 20122030189 is 98103022102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20031590089 + 90440100 = 141533^2 + 9510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122030189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122030139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061015094 + 10061015095.

It is an arithmetic number, because the mean of its divisors is an integer number (10061015095).

Almost surely, 2^20122030189 is an apocalyptic number.

It is an amenable number.

20122030189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122030189 is an equidigital number, since it uses as much as digits as its factorization.

20122030189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 20122030189 in words is "twenty billion, one hundred twenty-two million, thirty thousand, one hundred eighty-nine".