121200221021110 has 96 divisors (see below), whose sum is σ = 276880967724960. Its totient is φ = 37772355801600.

The previous prime is 121200221021107. The next prime is 121200221021123. The reversal of 121200221021110 is 11120122002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45827746 + ... + 48400234.

It is an arithmetic number, because the mean of its divisors is an integer number (2884176747135).

Almost surely, 2^{121200221021110} is an apocalyptic number.

121200221021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200221021110 is an abundant number, since it is smaller than the sum of its proper divisors (155680746703850).

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

121200221021110 is a wasteful number, since it uses less digits than its factorization.

121200221021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581262 (or 2581255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121200221021110 its reverse (11120122002121), we get a palindrome (132320343023231).

The spelling of 121200221021110 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twenty-one million, twenty-one thousand, one hundred ten".