1212220211022 has 48 divisors (see below), whose sum is σ = 2839434758160. Its totient is φ = 372460260096.

The previous prime is 1212220211021. The next prime is 1212220211099. The reversal of 1212220211022 is 2201120222121.

It is a happy number.

1212220211022 is a `hidden beast` number, since 1 + 212 + 220 + 211 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212220210986 and 1212220211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212220211021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47886043 + ... + 47911350.

It is an arithmetic number, because the mean of its divisors is an integer number (59154890795).

Almost surely, 2^{1212220211022} is an apocalyptic number.

1212220211022 is an abundant number, since it is smaller than the sum of its proper divisors (1627214547138).

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

1212220211022 is a wasteful number, since it uses less digits than its factorization.

1212220211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95797457 (or 95797454 counting only the distinct ones).

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

Adding to 1212220211022 its reverse (2201120222121), we get a palindrome (3413340433143).

The spelling of 1212220211022 in words is "one trillion, two hundred twelve billion, two hundred twenty million, two hundred eleven thousand, twenty-two".