20122122100189 has 2 divisors, whose sum is σ = 20122122100190. Its totient is φ = 20122122100188.

The previous prime is 20122122100099. The next prime is 20122122100277. The reversal of 20122122100189 is 98100122122102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19731319580025 + 390802520164 = 4441995^2 + 625142^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122122100189 - 2³⁷ = 19984683146717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122122100189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122122101189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061061050094 + 10061061050095.

It is an arithmetic number, because the mean of its divisors is an integer number (10061061050095).

Almost surely, 2^{20122122100189} is an apocalyptic number.

It is an amenable number.

20122122100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122122100189 is an equidigital number, since it uses as much as digits as its factorization.

20122122100189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 20122122100189 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred thousand, one hundred eighty-nine".