121122123000 has 128 divisors (see below), whose sum is σ = 379990578240. Its totient is φ = 32120640000.

The previous prime is 121122122987. The next prime is 121122123019. The reversal of 121122123000 is 321221121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431470 + ... + 654530.

Almost surely, 2^121122123000 is an apocalyptic number.

121122123000 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 121122123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189995289120).

121122123000 is an abundant number, since it is smaller than the sum of its proper divisors (258868455240).

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

121122123000 is a wasteful number, since it uses less digits than its factorization.

121122123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223266 (or 223252 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121122123000 its reverse (321221121), we get a palindrome (121443344121).

The spelling of 121122123000 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-three thousand".