12100010021021 has 8 divisors (see below), whose sum is σ = 13050920340864. Its totient is φ = 11151976889520.

The previous prime is 12100010021009. The next prime is 12100010021059. The reversal of 12100010021021 is 12012001000121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100010021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100010020993 and 12100010021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100010221021) 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, 719288345 + ... + 719305166.

It is an arithmetic number, because the mean of its divisors is an integer number (1631365042608).

Almost surely, 2^{12100010021021} is an apocalyptic number.

It is an amenable number.

12100010021021 is a deficient number, since it is larger than the sum of its proper divisors (950910319843).

12100010021021 is a wasteful number, since it uses less digits than its factorization.

12100010021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438594171.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12100010021021 its reverse (12012001000121), we get a palindrome (24112011021142).

The spelling of 12100010021021 in words is "twelve trillion, one hundred billion, ten million, twenty-one thousand, twenty-one".