10010012121221 has 8 divisors (see below), whose sum is σ = 11464510674240. Its totient is φ = 8561637773568.

The previous prime is 10010012121211. The next prime is 10010012121227. The reversal of 10010012121221 is 12212121001001.

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-10010012121221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010012121196 and 10010012121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010012121227) 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, 1531047836 + ... + 1531054373.

It is an arithmetic number, because the mean of its divisors is an integer number (1433063834280).

Almost surely, 2^{10010012121221} is an apocalyptic number.

It is an amenable number.

10010012121221 is a deficient number, since it is larger than the sum of its proper divisors (1454498553019).

10010012121221 is an equidigital number, since it uses as much as digits as its factorization.

10010012121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062102683.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10010012121221 its reverse (12212121001001), we get a palindrome (22222133122222).

The spelling of 10010012121221 in words is "ten trillion, ten billion, twelve million, one hundred twenty-one thousand, two hundred twenty-one".