100120201222212 has 36 divisors (see below), whose sum is σ = 255587378376876. Its totient is φ = 33042970699200.

The previous prime is 100120201222201. The next prime is 100120201222213. The reversal of 100120201222212 is 212222102021001.

It is a happy number.

100120201222212 is a `hidden beast` number, since 10 + 0 + 1 + 20 + 201 + 222 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 91904548462596 + 8215652759616 = 9586686^2 + 2866296^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (100120201222213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13767900823 + ... + 13767908094.

Almost surely, 2^{100120201222212} is an apocalyptic number.

100120201222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100120201222212 is an abundant number, since it is smaller than the sum of its proper divisors (155467177154664).

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

100120201222212 is a wasteful number, since it uses less digits than its factorization.

100120201222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27535809028 (or 27535809023 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100120201222212 its reverse (212222102021001), we get a palindrome (312342303243213).

The spelling of 100120201222212 in words is "one hundred trillion, one hundred twenty billion, two hundred one million, two hundred twenty-two thousand, two hundred twelve".