121221101101 has 8 divisors (see below), whose sum is σ = 125582637600. Its totient is φ = 116871664560.

The previous prime is 121221101087. The next prime is 121221101137. The reversal of 121221101101 is 101101122121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121221101101 - 2¹¹ = 121221099053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221108101) 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, 3004591 + ... + 3044668.

It is an arithmetic number, because the mean of its divisors is an integer number (15697829700).

Almost surely, 2^121221101101 is an apocalyptic number.

It is an amenable number.

121221101101 is a deficient number, since it is larger than the sum of its proper divisors (4361536499).

121221101101 is an equidigital number, since it uses as much as digits as its factorization.

121221101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049979.

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

Adding to 121221101101 its reverse (101101122121), we get a palindrome (222322223222).

The spelling of 121221101101 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred one".