1222212022121 has 8 divisors (see below), whose sum is σ = 1229601811200. Its totient is φ = 1214823080448.

The previous prime is 1222212022063. The next prime is 1222212022211. The reversal of 1222212022121 is 1212202122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222212022121 - 2³⁸ = 947334115177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222212022093 and 1222212022102.

It is not an unprimeable number, because it can be changed into a prime (1222212022721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2811440 + ... + 3216926.

It is an arithmetic number, because the mean of its divisors is an integer number (153700226400).

Almost surely, 2^{1222212022121} is an apocalyptic number.

It is an amenable number.

1222212022121 is a deficient number, since it is larger than the sum of its proper divisors (7389789079).

1222212022121 is a wasteful number, since it uses less digits than its factorization.

1222212022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423703.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222212022121 its reverse (1212202122221), we get a palindrome (2434414144342).

The spelling of 1222212022121 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, twenty-two thousand, one hundred twenty-one".