121311030 has 16 divisors (see below), whose sum is σ = 291146544. Its totient is φ = 32349600.

The previous prime is 121311019. The next prime is 121311053. The reversal of 121311030 is 30113121.

It is a junction number, because it is equal to n+sod(n) for n = 121310997 and 121311015.

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, 2021821 + ... + 2021880.

It is an arithmetic number, because the mean of its divisors is an integer number (18196659).

Almost surely, 2^121311030 is an apocalyptic number.

121311030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311030 is an abundant number, since it is smaller than the sum of its proper divisors (169835514).

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

121311030 is a wasteful number, since it uses less digits than its factorization.

121311030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043711.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 121311030 is about 11014.1286536884. The cubic root of 121311030 is about 495.0321782979.

Adding to 121311030 its reverse (30113121), we get a palindrome (151424151).

The spelling of 121311030 in words is "one hundred twenty-one million, three hundred eleven thousand, thirty".