121201120000 has 90 divisors (see below), whose sum is σ = 302314625228. Its totient is φ = 48480384000.

The previous prime is 121201119973. The next prime is 121201120037. The reversal of 121201120000 is 21102121.

It is a super-2 number, since 2×121201120000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 218754 + ... + 538753.

Almost surely, 2^121201120000 is an apocalyptic number.

121201120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201120000 is an abundant number, since it is smaller than the sum of its proper divisors (181113505228).

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

121201120000 is an frugal number, since it uses more digits than its factorization.

121201120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757543 (or 757514 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121201120000 its reverse (21102121), we get a palindrome (121222222121).

The spelling of 121201120000 in words is "one hundred twenty-one billion, two hundred one million, one hundred twenty thousand".