12210010100021 has 8 divisors (see below), whose sum is σ = 12454870102560. Its totient is φ = 11965686484752.

The previous prime is 12210010099999. The next prime is 12210010100077. The reversal of 12210010100021 is 12000101001221.

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-12210010100021 is a prime.

It is a super-2 number, since 2×12210010100021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210010099975 and 12210010100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210010100221) 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, 134050835 + ... + 134141888.

It is an arithmetic number, because the mean of its divisors is an integer number (1556858762820).

Almost surely, 2^{12210010100021} is an apocalyptic number.

It is an amenable number.

12210010100021 is a deficient number, since it is larger than the sum of its proper divisors (244860002539).

12210010100021 is an equidigital number, since it uses as much as digits as its factorization.

12210010100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268193635.

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

Adding to 12210010100021 its reverse (12000101001221), we get a palindrome (24210111101242).

The spelling of 12210010100021 in words is "twelve trillion, two hundred ten billion, ten million, one hundred thousand, twenty-one".