121021212000 has 192 divisors, whose sum is σ = 426963386304. Its totient is φ = 29789798400.

The previous prime is 121021211917. The next prime is 121021212019. The reversal of 121021212000 is 212120121.

It is a super-2 number, since 2×121021212000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 231889 + ... + 543888.

It is an arithmetic number, because the mean of its divisors is an integer number (2223767637).

Almost surely, 2^121021212000 is an apocalyptic number.

121021212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021212000 is an abundant number, since it is smaller than the sum of its proper divisors (305942174304).

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

121021212000 is a wasteful number, since it uses less digits than its factorization.

121021212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775818 (or 775800 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121021212000 its reverse (212120121), we get a palindrome (121233332121).

The spelling of 121021212000 in words is "one hundred twenty-one billion, twenty-one million, two hundred twelve thousand".