121123220000 has 120 divisors (see below), whose sum is σ = 298451227536. Its totient is φ = 48372896000.

The previous prime is 121123219999. The next prime is 121123220051. The reversal of 121123220000 is 22321121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13655567 + ... + 13664433.

Almost surely, 2^121123220000 is an apocalyptic number.

121123220000 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 121123220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149225613768).

121123220000 is an abundant number, since it is smaller than the sum of its proper divisors (177328007536).

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

121123220000 is an frugal number, since it uses more digits than its factorization.

121123220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580 (or 9557 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 121123220000 its reverse (22321121), we get a palindrome (121145541121).

The spelling of 121123220000 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty thousand".