121201211000 has 64 divisors (see below), whose sum is σ = 300293866080. Its totient is φ = 45628684800.

The previous prime is 121201210981. The next prime is 121201211023. The reversal of 121201211000 is 112102121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3547742 + ... + 3581741.

Almost surely, 2^121201211000 is an apocalyptic number.

121201211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201211000 is an abundant number, since it is smaller than the sum of its proper divisors (179092655080).

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

121201211000 is a wasteful number, since it uses less digits than its factorization.

121201211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129521 (or 7129507 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121201211000 its reverse (112102121), we get a palindrome (121313313121).

The spelling of 121201211000 in words is "one hundred twenty-one billion, two hundred one million, two hundred eleven thousand".