2212121002001 has 4 divisors (see below), whose sum is σ = 2243277635904. Its totient is φ = 2180964368100.

The previous prime is 2212121001929. The next prime is 2212121002019. The reversal of 2212121002001 is 1002001212122.

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 2212121002001 - 2¹⁴ = 2212120985617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212121002051) 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, 15578316845 + ... + 15578316986.

It is an arithmetic number, because the mean of its divisors is an integer number (560819408976).

Almost surely, 2^{2212121002001} is an apocalyptic number.

It is an amenable number.

2212121002001 is a deficient number, since it is larger than the sum of its proper divisors (31156633903).

2212121002001 is an equidigital number, since it uses as much as digits as its factorization.

2212121002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31156633902.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2212121002001 its reverse (1002001212122), we get a palindrome (3214122214123).

The spelling of 2212121002001 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, two thousand, one".