10211221121001 has 8 divisors (see below), whose sum is σ = 14331538415520. Its totient is φ = 6449192286912.

The previous prime is 10211221120949. The next prime is 10211221121011. The reversal of 10211221121001 is 10012112211201.

It is a happy number.

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

It is not a de Polignac number, because 10211221121001 - 2⁶ = 10211221120937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10211221121011) 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, 89572115040 + ... + 89572115153.

It is an arithmetic number, because the mean of its divisors is an integer number (1791442301940).

Almost surely, 2^{10211221121001} is an apocalyptic number.

It is an amenable number.

10211221121001 is a deficient number, since it is larger than the sum of its proper divisors (4120317294519).

10211221121001 is a wasteful number, since it uses less digits than its factorization.

10211221121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179144230215.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10211221121001 its reverse (10012112211201), we get a palindrome (20223333332202).

The spelling of 10211221121001 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, one".