12201001012021 has 4 divisors (see below), whose sum is σ = 12205203908832. Its totient is φ = 12196798115212.

The previous prime is 12201001012007. The next prime is 12201001012037. The reversal of 12201001012021 is 12021010010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12201001012021 - 2⁵ = 12201001011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201001011992 and 12201001012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201001012061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101444051 + ... + 2101449856.

It is an arithmetic number, because the mean of its divisors is an integer number (3051300977208).

Almost surely, 2^{12201001012021} is an apocalyptic number.

It is an amenable number.

12201001012021 is a deficient number, since it is larger than the sum of its proper divisors (4202896811).

12201001012021 is an equidigital number, since it uses as much as digits as its factorization.

12201001012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202896810.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12201001012021 its reverse (12021010010221), we get a palindrome (24222011022242).

The spelling of 12201001012021 in words is "twelve trillion, two hundred one billion, one million, twelve thousand, twenty-one".