122100012255 has 128 divisors (see below), whose sum is σ = 223265839104. Its totient is φ = 56527257600.

The previous prime is 122100012217. The next prime is 122100012269. The reversal of 122100012255 is 552210001221.

It is not a de Polignac number, because 122100012255 - 2⁶ = 122100012191 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 127 ways as a sum of consecutive naturals, for example, 89712775 + ... + 89714135.

It is an arithmetic number, because the mean of its divisors is an integer number (1744264368).

Almost surely, 2^122100012255 is an apocalyptic number.

122100012255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122100012255 is a deficient number, since it is larger than the sum of its proper divisors (101165826849).

122100012255 is a wasteful number, since it uses less digits than its factorization.

122100012255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 122100012255 its reverse (552210001221), we get a palindrome (674310013476).

The spelling of 122100012255 in words is "one hundred twenty-two billion, one hundred million, twelve thousand, two hundred fifty-five".