12101103021 has 48 divisors (see below), whose sum is σ = 19507004928. Its totient is φ = 6535620000.

The previous prime is 12101102971. The next prime is 12101103031. The reversal of 12101103021 is 12030110121.

It is not a de Polignac number, because 12101103021 - 2¹⁴ = 12101086637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101102988 and 12101103006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101103031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3720646 + ... + 3723896.

It is an arithmetic number, because the mean of its divisors is an integer number (406395936).

Almost surely, 2^12101103021 is an apocalyptic number.

It is an amenable number.

12101103021 is a deficient number, since it is larger than the sum of its proper divisors (7405901907).

12101103021 is a wasteful number, since it uses less digits than its factorization.

12101103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790 (or 3771 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 12101103021 its reverse (12030110121), we get a palindrome (24131213142).

The spelling of 12101103021 in words is "twelve billion, one hundred one million, one hundred three thousand, twenty-one".