2200211212121 has 4 divisors (see below), whose sum is σ = 2369458228452. Its totient is φ = 2030964195792.

The previous prime is 2200211212103. The next prime is 2200211212139. The reversal of 2200211212121 is 1212121120022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2200211212103) and next prime (2200211212139).

It can be written as a sum of positive squares in 2 ways, for example, as 175509885721 + 2024701326400 = 418939^2 + 1422920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200211212121 - 2¹⁰ = 2200211211097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2200211212121.

It is not an unprimeable number, because it can be changed into a prime (2200211212151) 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, 84623508146 + ... + 84623508171.

It is an arithmetic number, because the mean of its divisors is an integer number (592364557113).

Almost surely, 2^{2200211212121} is an apocalyptic number.

It is an amenable number.

2200211212121 is a deficient number, since it is larger than the sum of its proper divisors (169247016331).

2200211212121 is a wasteful number, since it uses less digits than its factorization.

2200211212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169247016330.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2200211212121 its reverse (1212121120022), we get a palindrome (3412332332143).

The spelling of 2200211212121 in words is "two trillion, two hundred billion, two hundred eleven million, two hundred twelve thousand, one hundred twenty-one".