1211212122022 has 32 divisors (see below), whose sum is σ = 2107471684608. Its totient is φ = 511314762816.

The previous prime is 1211212122019. The next prime is 1211212122023. The reversal of 1211212122022 is 2202212121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211212122023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31541698 + ... + 31580074.

It is an arithmetic number, because the mean of its divisors is an integer number (65858490144).

Almost surely, 2^{1211212122022} is an apocalyptic number.

1211212122022 is a deficient number, since it is larger than the sum of its proper divisors (896259562586).

1211212122022 is a wasteful number, since it uses less digits than its factorization.

1211212122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72100.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1211212122022 its reverse (2202212121121), we get a palindrome (3413424243143).

Subtracting 1211212122022 from its reverse (2202212121121), we obtain a palindrome (990999999099).

The spelling of 1211212122022 in words is "one trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, twenty-two".