2211210012021 has 4 divisors (see below), whose sum is σ = 2948280016032. Its totient is φ = 1474140008012.

The previous prime is 2211210012013. The next prime is 2211210012047. The reversal of 2211210012021 is 1202100121122.

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 2211210012021 - 2³ = 2211210012013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211210013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368535002001 + ... + 368535002006.

It is an arithmetic number, because the mean of its divisors is an integer number (737070004008).

Almost surely, 2^{2211210012021} is an apocalyptic number.

It is an amenable number.

2211210012021 is a deficient number, since it is larger than the sum of its proper divisors (737070004011).

2211210012021 is an equidigital number, since it uses as much as digits as its factorization.

2211210012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737070004010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2211210012021 its reverse (1202100121122), we get a palindrome (3413310133143).

The spelling of 2211210012021 in words is "two trillion, two hundred eleven billion, two hundred ten million, twelve thousand, twenty-one".