12201012021 has 16 divisors (see below), whose sum is σ = 17748891648. Its totient is φ = 7393734000.

The previous prime is 12201012001. The next prime is 12201012041. The reversal of 12201012021 is 12021010221.

It is an interprime number because it is at equal distance from previous prime (12201012001) and next prime (12201012041).

It is not a de Polignac number, because 12201012021 - 2⁵ = 12201011989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201011988 and 12201012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201012001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430140 + ... + 457626.

It is an arithmetic number, because the mean of its divisors is an integer number (1109305728).

Almost surely, 2^12201012021 is an apocalyptic number.

12201012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201012021 is a deficient number, since it is larger than the sum of its proper divisors (5547879627).

12201012021 is a wasteful number, since it uses less digits than its factorization.

12201012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40952.

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

Adding to 12201012021 its reverse (12021010221), we get a palindrome (24222022242).

The spelling of 12201012021 in words is "twelve billion, two hundred one million, twelve thousand, twenty-one".