2211201002121 has 4 divisors (see below), whose sum is σ = 2948268002832. Its totient is φ = 1474134001412.

The previous prime is 2211201002113. The next prime is 2211201002173. The reversal of 2211201002121 is 1212001021122.

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 2211201002121 - 2³ = 2211201002113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211201002121.

It is not an unprimeable number, because it can be changed into a prime (2211201002191) 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, 368533500351 + ... + 368533500356.

It is an arithmetic number, because the mean of its divisors is an integer number (737067000708).

Almost surely, 2^{2211201002121} is an apocalyptic number.

It is an amenable number.

2211201002121 is a deficient number, since it is larger than the sum of its proper divisors (737067000711).

2211201002121 is an equidigital number, since it uses as much as digits as its factorization.

2211201002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737067000710.

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

Adding to 2211201002121 its reverse (1212001021122), we get a palindrome (3423202023243).

The spelling of 2211201002121 in words is "two trillion, two hundred eleven billion, two hundred one million, two thousand, one hundred twenty-one".