122100210012 has 96 divisors (see below), whose sum is σ = 329497749504. Its totient is φ = 34838726400.

The previous prime is 122100209993. The next prime is 122100210013. The reversal of 122100210012 is 210012001221.

It is a super-2 number, since 2×122100210012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 122100210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100210013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251823 + ... + 554630.

It is an arithmetic number, because the mean of its divisors is an integer number (3432268224).

Almost surely, 2^122100210012 is an apocalyptic number.

122100210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122100210012 is an abundant number, since it is smaller than the sum of its proper divisors (207397539492).

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

122100210012 is a wasteful number, since it uses less digits than its factorization.

122100210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806539 (or 806537 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122100210012 its reverse (210012001221), we get a palindrome (332112211233).

The spelling of 122100210012 in words is "one hundred twenty-two billion, one hundred million, two hundred ten thousand, twelve".