100212022121221 has 8 divisors (see below), whose sum is σ = 100405541407104. Its totient is φ = 100018688825280.

The previous prime is 100212022121209. The next prime is 100212022121291. The reversal of 100212022121221 is 122121220212001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100212022121221 - 2¹¹ = 100212022119173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212022121201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45418815 + ... + 47574076.

It is an arithmetic number, because the mean of its divisors is an integer number (12550692675888).

Almost surely, 2^{100212022121221} is an apocalyptic number.

It is an amenable number.

100212022121221 is a deficient number, since it is larger than the sum of its proper divisors (193519285883).

100212022121221 is an equidigital number, since it uses as much as digits as its factorization.

100212022121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92994971.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 100212022121221 its reverse (122121220212001), we get a palindrome (222333242333222).

The spelling of 100212022121221 in words is "one hundred trillion, two hundred twelve billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".