20122100222149 has 2 divisors, whose sum is σ = 20122100222150. Its totient is φ = 20122100222148.

The previous prime is 20122100222143. The next prime is 20122100222251. The reversal of 20122100222149 is 94122200122102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20121890262049 + 209960100 = 4485743^2 + 14490^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122100222149 - 2²⁹ = 20121563351237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122100222143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061050111074 + 10061050111075.

It is an arithmetic number, because the mean of its divisors is an integer number (10061050111075).

Almost surely, 2^{20122100222149} is an apocalyptic number.

It is an amenable number.

20122100222149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122100222149 is an equidigital number, since it uses as much as digits as its factorization.

20122100222149 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 28.

The spelling of 20122100222149 in words is "twenty trillion, one hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, one hundred forty-nine".