2212121102201 has 4 divisors (see below), whose sum is σ = 2212156486992. Its totient is φ = 2212085717412.

The previous prime is 2212121102197. The next prime is 2212121102209. The reversal of 2212121102201 is 1022011212122.

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 2212121102201 - 2² = 2212121102197 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 2212121102201.

It is not an unprimeable number, because it can be changed into a prime (2212121102209) 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, 17598455 + ... + 17723708.

It is an arithmetic number, because the mean of its divisors is an integer number (553039121748).

Almost surely, 2^{2212121102201} is an apocalyptic number.

It is an amenable number.

2212121102201 is a deficient number, since it is larger than the sum of its proper divisors (35384791).

2212121102201 is an equidigital number, since it uses as much as digits as its factorization.

2212121102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35384790.

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

Adding to 2212121102201 its reverse (1022011212122), we get a palindrome (3234132314323).

The spelling of 2212121102201 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, one hundred two thousand, two hundred one".