121210122000 has 160 divisors (see below), whose sum is σ = 426307250304. Its totient is φ = 29384256000.

The previous prime is 121210121993. The next prime is 121210122001. The reversal of 121210122000 is 221012121.

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

It is not an unprimeable number, because it can be changed into a prime (121210122001) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 852259 + ... + 984258.

Almost surely, 2^121210122000 is an apocalyptic number.

121210122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210122000 is an abundant number, since it is smaller than the sum of its proper divisors (305097128304).

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

121210122000 is a wasteful number, since it uses less digits than its factorization.

121210122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836554 (or 1836538 counting only the distinct ones).

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

Adding to 121210122000 its reverse (221012121), we get a palindrome (121431134121).

The spelling of 121210122000 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand".