121202212220220 has 48 divisors (see below), whose sum is σ = 339367284150048. Its totient is φ = 32320486122240.

The previous prime is 121202212220087. The next prime is 121202212220233. The reversal of 121202212220220 is 22022212202121.

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, 16596582 + ... + 22756338.

It is an arithmetic number, because the mean of its divisors is an integer number (7070151753126).

Almost surely, 2^{121202212220220} is an apocalyptic number.

121202212220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202212220220 is an abundant number, since it is smaller than the sum of its proper divisors (218165071929828).

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

121202212220220 is a wasteful number, since it uses less digits than its factorization.

121202212220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487710 (or 6487708 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121202212220220 its reverse (22022212202121), we get a palindrome (143224424422341).

The spelling of 121202212220220 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty".