121420232530 has 16 divisors (see below), whose sum is σ = 226092847320. Its totient is φ = 46893331072.

The previous prime is 121420232473. The next prime is 121420232533. The reversal of 121420232530 is 35232024121.

It can be written as a sum of positive squares in 4 ways, for example, as 55190695329 + 66229537201 = 234927^2 + 257351^2 .

It is a super-3 number, since 3×121420232530³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121420232495 and 121420232504.

It is not an unprimeable number, because it can be changed into a prime (121420232533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 209344939 + ... + 209345518.

Almost surely, 2^121420232530 is an apocalyptic number.

121420232530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121420232530 is a deficient number, since it is larger than the sum of its proper divisors (104672614790).

121420232530 is a wasteful number, since it uses less digits than its factorization.

121420232530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418690493.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 121420232530 its reverse (35232024121), we get a palindrome (156652256651).

The spelling of 121420232530 in words is "one hundred twenty-one billion, four hundred twenty million, two hundred thirty-two thousand, five hundred thirty".