121220030 has 16 divisors (see below), whose sum is σ = 231031440. Its totient is φ = 45635712.

The previous prime is 121220023. The next prime is 121220041. The reversal of 121220030 is 30022121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121219993 and 121220020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356360 + ... + 356699.

It is an arithmetic number, because the mean of its divisors is an integer number (14439465).

Almost surely, 2^121220030 is an apocalyptic number.

121220030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220030 is a deficient number, since it is larger than the sum of its proper divisors (109811410).

121220030 is a wasteful number, since it uses less digits than its factorization.

121220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713083.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 121220030 is about 11009.9968210713. The cubic root of 121220030 is about 494.9083665363.

Adding to 121220030 its reverse (30022121), we get a palindrome (151242151).

The spelling of 121220030 in words is "one hundred twenty-one million, two hundred twenty thousand, thirty".