2222221212021 has 32 divisors (see below), whose sum is σ = 3158724412800. Its totient is φ = 1385681955840.

The previous prime is 2222221211993. The next prime is 2222221212067. The reversal of 2222221212021 is 1202121222222.

2222221212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2222221212021 - 2¹⁵ = 2222221179253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222221212121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1109425 + ... + 2382281.

It is an arithmetic number, because the mean of its divisors is an integer number (98710137900).

Almost surely, 2^{2222221212021} is an apocalyptic number.

It is an amenable number.

2222221212021 is a deficient number, since it is larger than the sum of its proper divisors (936503200779).

2222221212021 is a wasteful number, since it uses less digits than its factorization.

2222221212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273269.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2222221212021 its reverse (1202121222222), we get a palindrome (3424342434243).

The spelling of 2222221212021 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, twenty-one".