121150511452220 has 144 divisors (see below), whose sum is σ = 279603256242240. Its totient is φ = 44033423056896.

The previous prime is 121150511452211. The next prime is 121150511452253. The reversal of 121150511452220 is 22254115051121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3299916584 + ... + 3299953296.

It is an arithmetic number, because the mean of its divisors is an integer number (1941689279460).

Almost surely, 2^{121150511452220} is an apocalyptic number.

121150511452220 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 121150511452220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139801628121120).

121150511452220 is an abundant number, since it is smaller than the sum of its proper divisors (158452744790020).

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

121150511452220 is a wasteful number, since it uses less digits than its factorization.

121150511452220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56472 (or 56453 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 32.

The spelling of 121150511452220 in words is "one hundred twenty-one trillion, one hundred fifty billion, five hundred eleven million, four hundred fifty-two thousand, two hundred twenty".