1221211120022 has 8 divisors (see below), whose sum is σ = 1832199359256. Its totient is φ = 610478000272.

The previous prime is 1221211120001. The next prime is 1221211120037. The reversal of 1221211120022 is 2200211121221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63767903 + ... + 63787050.

It is an arithmetic number, because the mean of its divisors is an integer number (229024919907).

Almost surely, 2^{1221211120022} is an apocalyptic number.

1221211120022 is a deficient number, since it is larger than the sum of its proper divisors (610988239234).

1221211120022 is a wasteful number, since it uses less digits than its factorization.

1221211120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127559742.

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

Adding to 1221211120022 its reverse (2200211121221), we get a palindrome (3421422241243).

The spelling of 1221211120022 in words is "one trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, twenty-two".