10021210021123 has 24 divisors (see below), whose sum is σ = 12346534495152. Its totient is φ = 8082055908864.

The previous prime is 10021210021079. The next prime is 10021210021127. The reversal of 10021210021123 is 32112001212001.

It is a de Polignac number, because none of the positive numbers 2^k-10021210021123 is a prime.

It is a super-2 number, since 2×10021210021123² (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 = 10021210021097 and 10021210021106.

It is not an unprimeable number, because it can be changed into a prime (10021210021127) 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 23 ways as a sum of consecutive naturals, for example, 1258815 + ... + 4650487.

It is an arithmetic number, because the mean of its divisors is an integer number (514438937298).

Almost surely, 2^{10021210021123} is an apocalyptic number.

10021210021123 is a deficient number, since it is larger than the sum of its proper divisors (2325324474029).

10021210021123 is a wasteful number, since it uses less digits than its factorization.

10021210021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395251 (or 3395244 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10021210021123 its reverse (32112001212001), we get a palindrome (42133211233124).

The spelling of 10021210021123 in words is "ten trillion, twenty-one billion, two hundred ten million, twenty-one thousand, one hundred twenty-three".