100212121122 has 32 divisors (see below), whose sum is σ = 207729614400. Its totient is φ = 32203044288.

The previous prime is 100212121117. The next prime is 100212121127. The reversal of 100212121122 is 221121212001.

It is an interprime number because it is at equal distance from previous prime (100212121117) and next prime (100212121127).

It is not an unprimeable number, because it can be changed into a prime (100212121127) 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 15 ways as a sum of consecutive naturals, for example, 2046472 + ... + 2094867.

It is an arithmetic number, because the mean of its divisors is an integer number (6491550450).

Almost surely, 2^100212121122 is an apocalyptic number.

100212121122 is an abundant number, since it is smaller than the sum of its proper divisors (107517493278).

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

100212121122 is a wasteful number, since it uses less digits than its factorization.

100212121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141490.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100212121122 its reverse (221121212001), we get a palindrome (321333333123).

The spelling of 100212121122 in words is "one hundred billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty-two".