121234220032 has 44 divisors (see below), whose sum is σ = 242754524236. Its totient is φ = 60515942400.

The previous prime is 121234220027. The next prime is 121234220033. The reversal of 121234220032 is 230022432121.

It can be written as a sum of positive squares in 2 ways, for example, as 87578116096 + 33656103936 = 295936^2 + 183456^2 .

It is a super-2 number, since 2×121234220032² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121234219985 and 121234220012.

It is not an unprimeable number, because it can be changed into a prime (121234220033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516928 + ... + 713920.

Almost surely, 2^121234220032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121234220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121377262118).

121234220032 is an abundant number, since it is smaller than the sum of its proper divisors (121520304204).

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

121234220032 is an equidigital number, since it uses as much as digits as its factorization.

121234220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197614 (or 197596 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 121234220032 its reverse (230022432121), we get a palindrome (351256652153).

The spelling of 121234220032 in words is "one hundred twenty-one billion, two hundred thirty-four million, two hundred twenty thousand, thirty-two".