212220121022 has 80 divisors (see below), whose sum is σ = 400378077120. Its totient is φ = 83861096256.

The previous prime is 212220121021. The next prime is 212220121051. The reversal of 212220121022 is 220121022212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220121021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 88831004 + ... + 88833392.

It is an arithmetic number, because the mean of its divisors is an integer number (5004725964).

Almost surely, 2^212220121022 is an apocalyptic number.

212220121022 is a deficient number, since it is larger than the sum of its proper divisors (188157956098).

212220121022 is a wasteful number, since it uses less digits than its factorization.

212220121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855 (or 3834 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212220121022 its reverse (220121022212), we get a palindrome (432341143234).

It can be divided in two parts, 212 and 220121022, that multiplied together give a palindrome (46665656664).

The spelling of 212220121022 in words is "two hundred twelve billion, two hundred twenty million, one hundred twenty-one thousand, twenty-two".