121222122000 has 320 divisors, whose sum is σ = 449417140224. Its totient is φ = 27536371200.

The previous prime is 121222121981. The next prime is 121222122019. The reversal of 121222122000 is 221222121.

121222122000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121222121981) and next prime (121222122019).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6837147 + ... + 6854853.

Almost surely, 2^121222122000 is an apocalyptic number.

121222122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121222122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224708570112).

121222122000 is an abundant number, since it is smaller than the sum of its proper divisors (328195018224).

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

121222122000 is a wasteful number, since it uses less digits than its factorization.

121222122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17903 (or 17887 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121222122000 its reverse (221222121), we get a palindrome (121443344121).

The spelling of 121222122000 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand".