12100022021 has 8 divisors (see below), whose sum is σ = 12702048000. Its totient is φ = 11511227520.

The previous prime is 12100021993. The next prime is 12100022057. The reversal of 12100022021 is 12022000121.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-12100022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100021993 and 12100022011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100082021) 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, 3305996 + ... + 3309653.

It is an arithmetic number, because the mean of its divisors is an integer number (1587756000).

Almost surely, 2^12100022021 is an apocalyptic number.

It is an amenable number.

12100022021 is a deficient number, since it is larger than the sum of its proper divisors (602025979).

12100022021 is an equidigital number, since it uses as much as digits as its factorization.

12100022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615739.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12100022021 its reverse (12022000121), we get a palindrome (24122022142).

The spelling of 12100022021 in words is "twelve billion, one hundred million, twenty-two thousand, twenty-one".