122021222200100 has 18 divisors (see below), whose sum is σ = 264786052174434. Its totient is φ = 48808488880000.

The previous prime is 122021222200079. The next prime is 122021222200147. The reversal of 122021222200100 is 1002222120221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 28524080550436 + 93497141649664 = 5340794^2 + 9669392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 610106110901 + ... + 610106111100.

It is an arithmetic number, because the mean of its divisors is an integer number (14710336231913).

Almost surely, 2^{122021222200100} is an apocalyptic number.

122021222200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122021222200100 is an abundant number, since it is smaller than the sum of its proper divisors (142764829974334).

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

122021222200100 is a wasteful number, since it uses less digits than its factorization.

122021222200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220212222015 (or 1220212222008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122021222200100 its reverse (1002222120221), we get a palindrome (123023444320321).

The spelling of 122021222200100 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred twenty-two million, two hundred thousand, one hundred".