121000022111110 has 16 divisors (see below), whose sum is σ = 227269606748256. Its totient is φ = 46295660633728.

The previous prime is 121000022111071. The next prime is 121000022111123. The reversal of 121000022111110 is 11111220000121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263043526099 + ... + 263043526558.

It is an arithmetic number, because the mean of its divisors is an integer number (14204350421766).

Almost surely, 2^{121000022111110} is an apocalyptic number.

121000022111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121000022111110 is a deficient number, since it is larger than the sum of its proper divisors (106269584637146).

121000022111110 is a wasteful number, since it uses less digits than its factorization.

121000022111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526087052687.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121000022111110 its reverse (11111220000121), we get a palindrome (132111242111231).

The spelling of 121000022111110 in words is "one hundred twenty-one trillion, twenty-two million, one hundred eleven thousand, one hundred ten".