122148476921 has 2 divisors, whose sum is σ = 122148476922. Its totient is φ = 122148476920.

The previous prime is 122148476903. The next prime is 122148476939. The reversal of 122148476921 is 129674841221.

It is a balanced prime because it is at equal distance from previous prime (122148476903) and next prime (122148476939).

It can be written as a sum of positive squares in only one way, i.e., 113356789225 + 8791687696 = 336685^2 + 93764^2 .

It is a cyclic number.

It is not a de Polignac number, because 122148476921 - 2¹⁸ = 122148214777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (122148476321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61074238460 + 61074238461.

It is an arithmetic number, because the mean of its divisors is an integer number (61074238461).

Almost surely, 2^122148476921 is an apocalyptic number.

It is an amenable number.

122148476921 is a deficient number, since it is larger than the sum of its proper divisors (1).

122148476921 is an equidigital number, since it uses as much as digits as its factorization.

122148476921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The spelling of 122148476921 in words is "one hundred twenty-two billion, one hundred forty-eight million, four hundred seventy-six thousand, nine hundred twenty-one".