122213231220 has 48 divisors (see below), whose sum is σ = 342869425920. Its totient is φ = 32526158976.

The previous prime is 122213231209. The next prime is 122213231263. The reversal of 122213231220 is 22132312221.

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, 1970332 + ... + 2031411.

It is an arithmetic number, because the mean of its divisors is an integer number (7143113040).

Almost surely, 2^122213231220 is an apocalyptic number.

122213231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122213231220 is an abundant number, since it is smaller than the sum of its proper divisors (220656194700).

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

122213231220 is a wasteful number, since it uses less digits than its factorization.

122213231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002264 (or 4002262 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 122213231220 its reverse (22132312221), we get a palindrome (144345543441).

The spelling of 122213231220 in words is "one hundred twenty-two billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred twenty".