100121202210021 has 8 divisors (see below), whose sum is σ = 133494982772160. Its totient is φ = 66747444893952.

The previous prime is 100121202210019. The next prime is 100121202210041. The reversal of 100121202210021 is 120012202121001.

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

It is not a de Polignac number, because 100121202210021 - 2¹ = 100121202210019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121202210041) 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, 12315240 + ... + 18759198.

It is an arithmetic number, because the mean of its divisors is an integer number (16686872846520).

Almost surely, 2^{100121202210021} is an apocalyptic number.

It is an amenable number.

100121202210021 is a deficient number, since it is larger than the sum of its proper divisors (33373780562139).

100121202210021 is an equidigital number, since it uses as much as digits as its factorization.

100121202210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11623035.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100121202210021 its reverse (120012202121001), we get a palindrome (220133404331022).

The spelling of 100121202210021 in words is "one hundred trillion, one hundred twenty-one billion, two hundred two million, two hundred ten thousand, twenty-one".