122040550251 has 12 divisors (see below), whose sum is σ = 176393310912. Its totient is φ = 81308436336.

The previous prime is 122040550241. The next prime is 122040550253. The reversal of 122040550251 is 152055040221.

122040550251 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 405 + 5 + 0 + 251 = 666.

It is not a de Polignac number, because 122040550251 - 2⁶ = 122040550187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122040550253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4312656 + ... + 4340861.

It is an arithmetic number, because the mean of its divisors is an integer number (14699442576).

Almost surely, 2^122040550251 is an apocalyptic number.

122040550251 is a deficient number, since it is larger than the sum of its proper divisors (54352760661).

122040550251 is a wasteful number, since it uses less digits than its factorization.

122040550251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655090 (or 8655087 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 122040550251 its reverse (152055040221), we get a palindrome (274095590472).

The spelling of 122040550251 in words is "one hundred twenty-two billion, forty million, five hundred fifty thousand, two hundred fifty-one".