12121220030 has 32 divisors (see below), whose sum is σ = 22265712000. Its totient is φ = 4749933312.

The previous prime is 12121220029. The next prime is 12121220063. The reversal of 12121220030 is 3002212121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12121219987 and 12121220014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53051 + ... + 164489.

It is an arithmetic number, because the mean of its divisors is an integer number (695803500).

Almost surely, 2^12121220030 is an apocalyptic number.

12121220030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121220030 is a deficient number, since it is larger than the sum of its proper divisors (10144491970).

12121220030 is a wasteful number, since it uses less digits than its factorization.

12121220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111668.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12121220030 its reverse (3002212121), we get a palindrome (15123432151).

The spelling of 12121220030 in words is "twelve billion, one hundred twenty-one million, two hundred twenty thousand, thirty".