2212121221203 has 4 divisors (see below), whose sum is σ = 2949494961608. Its totient is φ = 1474747480800.

The previous prime is 2212121221157. The next prime is 2212121221237. The reversal of 2212121221203 is 3021221212122.

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

It is not a de Polignac number, because 2212121221203 - 2⁹ = 2212121220691 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 2212121221203.

It is not an unprimeable number, because it can be changed into a prime (2212121225203) 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, 368686870198 + ... + 368686870203.

It is an arithmetic number, because the mean of its divisors is an integer number (737373740402).

Almost surely, 2^{2212121221203} is an apocalyptic number.

2212121221203 is a deficient number, since it is larger than the sum of its proper divisors (737373740405).

2212121221203 is an equidigital number, since it uses as much as digits as its factorization.

2212121221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737373740404.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2212121221203 its reverse (3021221212122), we get a palindrome (5233342433325).

The spelling of 2212121221203 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred three".