1222212122001 has 48 divisors (see below), whose sum is σ = 1925840716800. Its totient is φ = 742395528576.

The previous prime is 1222212121957. The next prime is 1222212122009. The reversal of 1222212122001 is 1002212122221.

It is a happy number.

It is not a de Polignac number, because 1222212122001 - 2⁹ = 1222212121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222212122009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35596120 + ... + 35630438.

It is an arithmetic number, because the mean of its divisors is an integer number (40121681600).

Almost surely, 2^{1222212122001} is an apocalyptic number.

It is an amenable number.

1222212122001 is a deficient number, since it is larger than the sum of its proper divisors (703628594799).

1222212122001 is a wasteful number, since it uses less digits than its factorization.

1222212122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38270 (or 38267 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222212122001 its reverse (1002212122221), we get a palindrome (2224424244222).

The spelling of 1222212122001 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, one".