1221210222022 has 32 divisors (see below), whose sum is σ = 2097341625600. Its totient is φ = 522417053088.

The previous prime is 1221210221983. The next prime is 1221210222079. The reversal of 1221210222022 is 2202220121221.

It is a super-3 number, since 3×1221210222022³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18002304 + ... + 18070012.

It is an arithmetic number, because the mean of its divisors is an integer number (65541925800).

Almost surely, 2^{1221210222022} is an apocalyptic number.

1221210222022 is a deficient number, since it is larger than the sum of its proper divisors (876131403578).

1221210222022 is a wasteful number, since it uses less digits than its factorization.

1221210222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70060.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1221210222022 its reverse (2202220121221), we get a palindrome (3423430343243).

The spelling of 1221210222022 in words is "one trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, twenty-two".