121220023002000 has 320 divisors, whose sum is σ = 423012399473664. Its totient is φ = 29687305267200.

The previous prime is 121220023001999. The next prime is 121220023002049. The reversal of 121220023002000 is 200320022121.

It is a happy number.

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, 11421577 + ... + 19310423.

Almost surely, 2^{121220023002000} is an apocalyptic number.

121220023002000 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 121220023002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211506199736832).

121220023002000 is an abundant number, since it is smaller than the sum of its proper divisors (301792376471664).

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

121220023002000 is a wasteful number, since it uses less digits than its factorization.

121220023002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889083 (or 7889067 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 121220023002000 its reverse (200320022121), we get a palindrome (121420343024121).

The spelling of 121220023002000 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty-three million, two thousand".