121260200000 has 84 divisors (see below), whose sum is σ = 300763382724. Its totient is φ = 48504000000.

The previous prime is 121260199967. The next prime is 121260200023. The reversal of 121260200000 is 2062121.

It can be written as a sum of positive squares in 6 ways, for example, as 69261606976 + 51998593024 = 263176^2 + 228032^2 .

It is a super-3 number, since 3×121260200000³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103151 + ... + 503150.

It is an arithmetic number, because the mean of its divisors is an integer number (3580516461).

Almost surely, 2^121260200000 is an apocalyptic number.

121260200000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121260200000 is an abundant number, since it is smaller than the sum of its proper divisors (179503182724).

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

121260200000 is an frugal number, since it uses more digits than its factorization.

121260200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606338 (or 606308 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 121260200000 its reverse (2062121), we get a palindrome (121262262121).

The spelling of 121260200000 in words is "one hundred twenty-one billion, two hundred sixty million, two hundred thousand".