100021222201212 has 48 divisors (see below), whose sum is σ = 279261532075680. Its totient is φ = 30775760676864.

The previous prime is 100021222201183. The next prime is 100021222201273. The reversal of 100021222201212 is 212102222120001.

It is a happy number.

100021222201212 is a `hidden beast` number, since 10 + 0 + 0 + 21 + 222 + 201 + 212 = 666.

It is a super-2 number, since 2×100021222201212² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35620091973 + ... + 35620094780.

It is an arithmetic number, because the mean of its divisors is an integer number (5817948584910).

Almost surely, 2^{100021222201212} is an apocalyptic number.

100021222201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100021222201212 is an abundant number, since it is smaller than the sum of its proper divisors (179240309874468).

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

100021222201212 is a wasteful number, since it uses less digits than its factorization.

100021222201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71240186779 (or 71240186771 counting only the distinct ones).

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

Adding to 100021222201212 its reverse (212102222120001), we get a palindrome (312123444321213).

The spelling of 100021222201212 in words is "one hundred trillion, twenty-one billion, two hundred twenty-two million, two hundred one thousand, two hundred twelve".