121223011200000 has 528 divisors, whose sum is σ = 414769728850848. Its totient is φ = 31452364800000.

The previous prime is 121223011199977. The next prime is 121223011200041. The reversal of 121223011200000 is 2110322121.

It is a super-3 number, since 3×121223011200000³ (a number of 43 digits) contains 333 as substring.

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 47 ways as a sum of consecutive naturals, for example, 355029360 + ... + 355370640.

Almost surely, 2^{121223011200000} is an apocalyptic number.

121223011200000 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 121223011200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207384864425424).

121223011200000 is an abundant number, since it is smaller than the sum of its proper divisors (293546717650848).

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

121223011200000 is an frugal number, since it uses more digits than its factorization.

121223011200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341366 (or 341328 counting only the distinct ones).

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

Adding to 121223011200000 its reverse (2110322121), we get a palindrome (121225121522121).

The spelling of 121223011200000 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, eleven million, two hundred thousand".