121121111122 has 64 divisors (see below), whose sum is σ = 206046965376. Its totient is φ = 52920000000.

The previous prime is 121121111101. The next prime is 121121111123. The reversal of 121121111122 is 221111121121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121121111096 and 121121111105.

It is not an unprimeable number, because it can be changed into a prime (121121111123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19219372 + ... + 19225672.

It is an arithmetic number, because the mean of its divisors is an integer number (3219483834).

Almost surely, 2^121121111122 is an apocalyptic number.

121121111122 is a deficient number, since it is larger than the sum of its proper divisors (84925854254).

121121111122 is a wasteful number, since it uses less digits than its factorization.

121121111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667.

The product of its digits is 16, while the sum is 16.

Adding to 121121111122 its reverse (221111121121), we get a palindrome (342232232243).

Subtracting 121121111122 from its reverse (221111121121), we obtain a palindrome (99990009999).

The spelling of 121121111122 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-two".