121131111030 has 16 divisors (see below), whose sum is σ = 290714666544. Its totient is φ = 32301629600.

The previous prime is 121131110993. The next prime is 121131111043. The reversal of 121131111030 is 30111131121.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2018851821 + ... + 2018851880.

It is an arithmetic number, because the mean of its divisors is an integer number (18169666659).

Almost surely, 2^121131111030 is an apocalyptic number.

121131111030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121131111030 is an abundant number, since it is smaller than the sum of its proper divisors (169583555514).

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

121131111030 is a wasteful number, since it uses less digits than its factorization.

121131111030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037703711.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 121131111030 its reverse (30111131121), we get a palindrome (151242242151).

The spelling of 121131111030 in words is "one hundred twenty-one billion, one hundred thirty-one million, one hundred eleven thousand, thirty".