121202121022120 has 64 divisors (see below), whose sum is σ = 274699614546000. Its totient is φ = 48126220861440.

The previous prime is 121202121022039. The next prime is 121202121022123. The reversal of 121202121022120 is 21220121202121.

It can be written as a sum of positive squares in 8 ways, for example, as 16046161246756 + 105155959775364 = 4005766^2 + 10254558^2 .

It is not an unprimeable number, because it can be changed into a prime (121202121022123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463745880 + ... + 464007160.

Almost surely, 2^{121202121022120} is an apocalyptic number.

121202121022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202121022120 is an abundant number, since it is smaller than the sum of its proper divisors (153497493523880).

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

121202121022120 is a wasteful number, since it uses less digits than its factorization.

121202121022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346078 (or 346074 counting only the distinct ones).

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

Adding to 121202121022120 its reverse (21220121202121), we get a palindrome (142422242224241).

The spelling of 121202121022120 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred twenty-one million, twenty-two thousand, one hundred twenty".