100121020011221 has 8 divisors (see below), whose sum is σ = 109223085765600. Its totient is φ = 91018980064240.

The previous prime is 100121020011217. The next prime is 100121020011223. The reversal of 100121020011221 is 122110020121001.

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 100121020011221 - 2² = 100121020011217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121020011196 and 100121020011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121020011223) 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, 2159690 + ... + 14314548.

It is an arithmetic number, because the mean of its divisors is an integer number (13652885720700).

Almost surely, 2^{100121020011221} is an apocalyptic number.

100121020011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100121020011221 is a deficient number, since it is larger than the sum of its proper divisors (9102065754379).

100121020011221 is a wasteful number, since it uses less digits than its factorization.

100121020011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12903699.

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

Adding to 100121020011221 its reverse (122110020121001), we get a palindrome (222231040132222).

The spelling of 100121020011221 in words is "one hundred trillion, one hundred twenty-one billion, twenty million, eleven thousand, two hundred twenty-one".