100101011221021 has 8 divisors (see below), whose sum is σ = 100479692907360. Its totient is φ = 99722951856528.

The previous prime is 100101011220989. The next prime is 100101011221039. The reversal of 100101011221021 is 120122110101001.

It is a happy number.

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 100101011221021 - 2⁵ = 100101011220989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100101011220992 and 100101011221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101011221091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155258151 + ... + 155901556.

It is an arithmetic number, because the mean of its divisors is an integer number (12559961613420).

Almost surely, 2^{100101011221021} is an apocalyptic number.

It is an amenable number.

100101011221021 is a deficient number, since it is larger than the sum of its proper divisors (378681686339).

100101011221021 is an equidigital number, since it uses as much as digits as its factorization.

100101011221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311160923.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100101011221021 its reverse (120122110101001), we get a palindrome (220223121322022).

The spelling of 100101011221021 in words is "one hundred trillion, one hundred one billion, eleven million, two hundred twenty-one thousand, twenty-one".