100121102001221 has 8 divisors (see below), whose sum is σ = 114849485038080. Its totient is φ = 85499061080688.

The previous prime is 100121102001169. The next prime is 100121102001233. The reversal of 100121102001221 is 122100201121001.

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 100121102001221 - 2¹⁴ = 100121101984837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121102001196 and 100121102001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121102001251) 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, 26585527061 + ... + 26585530826.

It is an arithmetic number, because the mean of its divisors is an integer number (14356185629760).

Almost surely, 2^{100121102001221} is an apocalyptic number.

It is an amenable number.

100121102001221 is a deficient number, since it is larger than the sum of its proper divisors (14728383036859).

100121102001221 is an equidigital number, since it uses as much as digits as its factorization.

100121102001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53171058163.

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

Adding to 100121102001221 its reverse (122100201121001), we get a palindrome (222221303122222).

The spelling of 100121102001221 in words is "one hundred trillion, one hundred twenty-one billion, one hundred two million, one thousand, two hundred twenty-one".