12101022021 has 8 divisors (see below), whose sum is σ = 17601486624. Its totient is φ = 7333952720.

The previous prime is 12101022001. The next prime is 12101022029. The reversal of 12101022021 is 12022010121.

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

It is a cyclic number.

It is not a de Polignac number, because 12101022021 - 2⁹ = 12101021509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101021988 and 12101022006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101022029) 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, 183348786 + ... + 183348851.

It is an arithmetic number, because the mean of its divisors is an integer number (2200185828).

Almost surely, 2^12101022021 is an apocalyptic number.

12101022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101022021 is a deficient number, since it is larger than the sum of its proper divisors (5500464603).

12101022021 is a wasteful number, since it uses less digits than its factorization.

12101022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366697651.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12101022021 its reverse (12022010121), we get a palindrome (24123032142).

The spelling of 12101022021 in words is "twelve billion, one hundred one million, twenty-two thousand, twenty-one".