10211221002123 has 16 divisors (see below), whose sum is σ = 15168954818560. Its totient is φ = 6788931667848.

The previous prime is 10211221002089. The next prime is 10211221002173. The reversal of 10211221002123 is 32120012211201.

It is not a de Polignac number, because 10211221002123 - 2⁸ = 10211221001867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211221002096 and 10211221002105.

It is not an unprimeable number, because it can be changed into a prime (10211221002173) 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 15 ways as a sum of consecutive naturals, for example, 515239915 + ... + 515259732.

It is an arithmetic number, because the mean of its divisors is an integer number (948059676160).

Almost surely, 2^{10211221002123} is an apocalyptic number.

10211221002123 is a deficient number, since it is larger than the sum of its proper divisors (4957733816437).

10211221002123 is a wasteful number, since it uses less digits than its factorization.

10211221002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030500023 (or 1030500017 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 10211221002123 its reverse (32120012211201), we get a palindrome (42331233213324).

The spelling of 10211221002123 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, two thousand, one hundred twenty-three".