12101010100021 has 8 divisors (see below), whose sum is σ = 12238333651520. Its totient is φ = 11964455868672.

The previous prime is 12101010100019. The next prime is 12101010100093. The reversal of 12101010100021 is 12000101010121.

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 12101010100021 - 2¹ = 12101010100019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101010099980 and 12101010100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101011100021) 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, 192298401 + ... + 192361318.

It is an arithmetic number, because the mean of its divisors is an integer number (1529791706440).

Almost surely, 2^{12101010100021} is an apocalyptic number.

It is an amenable number.

12101010100021 is a deficient number, since it is larger than the sum of its proper divisors (137323551499).

12101010100021 is a wasteful number, since it uses less digits than its factorization.

12101010100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384660075.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12101010100021 its reverse (12000101010121), we get a palindrome (24101111110142).

The spelling of 12101010100021 in words is "twelve trillion, one hundred one billion, ten million, one hundred thousand, twenty-one".