122122122112100 has 72 divisors (see below), whose sum is σ = 290563863847488. Its totient is φ = 44182622780800.

The previous prime is 122122122112087. The next prime is 122122122112117. The reversal of 122122122112100 is 1211221221221.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 23 ways as a sum of consecutive naturals, for example, 281560232 + ... + 281993631.

It is an arithmetic number, because the mean of its divisors is an integer number (4035609220104).

Almost surely, 2^{122122122112100} is an apocalyptic number.

122122122112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122122122112100 is an abundant number, since it is smaller than the sum of its proper divisors (168441741735388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122122122112100 is a wasteful number, since it uses less digits than its factorization.

122122122112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563554085 (or 563554078 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122122122112100 its reverse (1211221221221), we get a palindrome (123333343333321).

The spelling of 122122122112100 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twelve thousand, one hundred".