121112211030 has 16 divisors (see below), whose sum is σ = 290669306544. Its totient is φ = 32296589600.

The previous prime is 121112211029. The next prime is 121112211097. The reversal of 121112211030 is 30112211121.

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, 2018536821 + ... + 2018536880.

It is an arithmetic number, because the mean of its divisors is an integer number (18166831659).

Almost surely, 2^121112211030 is an apocalyptic number.

121112211030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112211030 is an abundant number, since it is smaller than the sum of its proper divisors (169557095514).

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

121112211030 is a wasteful number, since it uses less digits than its factorization.

121112211030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037073711.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121112211030 its reverse (30112211121), we get a palindrome (151224422151).

Subtracting from 121112211030 its reverse (30112211121), we obtain a palindrome (90999999909).

The spelling of 121112211030 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, thirty".