121250566620 has 144 divisors (see below), whose sum is σ = 374988362112. Its totient is φ = 31701795840.

The previous prime is 121250566579. The next prime is 121250566637. The reversal of 121250566620 is 26665052121.

It is a super-3 number, since 3×121250566620³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17845944 + ... + 17852736.

It is an arithmetic number, because the mean of its divisors is an integer number (2604085848).

Almost surely, 2^121250566620 is an apocalyptic number.

121250566620 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 121250566620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187494181056).

121250566620 is an abundant number, since it is smaller than the sum of its proper divisors (253737795492).

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

121250566620 is a wasteful number, since it uses less digits than its factorization.

121250566620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8732 (or 8727 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 121250566620 in words is "one hundred twenty-one billion, two hundred fifty million, five hundred sixty-six thousand, six hundred twenty".