100120012101221 has 8 divisors (see below), whose sum is σ = 117083867972544. Its totient is φ = 83821405479840.

The previous prime is 100120012101211. The next prime is 100120012101293. The reversal of 100120012101221 is 122101210021001.

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

It is not a de Polignac number, because 100120012101221 - 2¹⁴ = 100120012084837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100120012101196 and 100120012101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120012101211) 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, 166312312160 + ... + 166312312761.

It is an arithmetic number, because the mean of its divisors is an integer number (14635483496568).

Almost surely, 2^{100120012101221} is an apocalyptic number.

It is an amenable number.

100120012101221 is a deficient number, since it is larger than the sum of its proper divisors (16963855871323).

100120012101221 is an equidigital number, since it uses as much as digits as its factorization.

100120012101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332624624971.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100120012101221 its reverse (122101210021001), we get a palindrome (222221222122222).

The spelling of 100120012101221 in words is "one hundred trillion, one hundred twenty billion, twelve million, one hundred one thousand, two hundred twenty-one".