1211023222122 has 16 divisors (see below), whose sum is σ = 2768053079232. Its totient is φ = 346006634880.

The previous prime is 1211023222109. The next prime is 1211023222177. The reversal of 1211023222122 is 2212223201121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14416943079 + ... + 14416943162.

It is an arithmetic number, because the mean of its divisors is an integer number (173003317452).

Almost surely, 2^{1211023222122} is an apocalyptic number.

1211023222122 is an abundant number, since it is smaller than the sum of its proper divisors (1557029857110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211023222122 is a wasteful number, since it uses less digits than its factorization.

1211023222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28833886253.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1211023222122 its reverse (2212223201121), we get a palindrome (3423246423243).

The spelling of 1211023222122 in words is "one trillion, two hundred eleven billion, twenty-three million, two hundred twenty-two thousand, one hundred twenty-two".