121200102221 has 8 divisors (see below), whose sum is σ = 132420779424. Its totient is φ = 110013172720.

The previous prime is 121200102217. The next prime is 121200102251. The reversal of 121200102221 is 122201002121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121200102221 - 2² = 121200102217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121200102196 and 121200102205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200102251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8429411 + ... + 8443776.

It is an arithmetic number, because the mean of its divisors is an integer number (16552597428).

Almost surely, 2^121200102221 is an apocalyptic number.

121200102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121200102221 is a deficient number, since it is larger than the sum of its proper divisors (11220677203).

121200102221 is a wasteful number, since it uses less digits than its factorization.

121200102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16873851.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121200102221 its reverse (122201002121), we get a palindrome (243401104342).

The spelling of 121200102221 in words is "one hundred twenty-one billion, two hundred million, one hundred two thousand, two hundred twenty-one".