121011220000 has 240 divisors, whose sum is σ = 325679774112. Its totient is φ = 43880960000.

The previous prime is 121011219983. The next prime is 121011220013. The reversal of 121011220000 is 22110121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 123859512 + ... + 123860488.

Almost surely, 2^121011220000 is an apocalyptic number.

121011220000 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 121011220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162839887056).

121011220000 is an abundant number, since it is smaller than the sum of its proper divisors (204668554112).

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

121011220000 is an equidigital number, since it uses as much as digits as its factorization.

121011220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121011220000 its reverse (22110121), we get a palindrome (121033330121).

The spelling of 121011220000 in words is "one hundred twenty-one billion, eleven million, two hundred twenty thousand".