20212012222201 has 4 divisors (see below), whose sum is σ = 20212148534400. Its totient is φ = 20211875910004.

The previous prime is 20212012222189. The next prime is 20212012222211. The reversal of 20212012222201 is 10222221021202.

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 20212012222201 - 2³⁹ = 19662256408313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212012222211) 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, 67933441 + ... + 68230318.

It is an arithmetic number, because the mean of its divisors is an integer number (5053037133600).

Almost surely, 2^{20212012222201} is an apocalyptic number.

It is an amenable number.

20212012222201 is a deficient number, since it is larger than the sum of its proper divisors (136312199).

20212012222201 is a wasteful number, since it uses less digits than its factorization.

20212012222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136312198.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20212012222201 its reverse (10222221021202), we get a palindrome (30434233243403).

The spelling of 20212012222201 in words is "twenty trillion, two hundred twelve billion, twelve million, two hundred twenty-two thousand, two hundred one".