121222101220111 has 8 divisors (see below), whose sum is σ = 121496514871680. Its totient is φ = 120947776487712.

The previous prime is 121222101220097. The next prime is 121222101220141. The reversal of 121222101220111 is 111022101222121.

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 121222101220111 - 2³⁵ = 121187741481743 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 (121222101220141) 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, 19499760 + ... + 24953653.

It is an arithmetic number, because the mean of its divisors is an integer number (15187064358960).

Almost surely, 2^{121222101220111} is an apocalyptic number.

121222101220111 is a deficient number, since it is larger than the sum of its proper divisors (274413651569).

121222101220111 is an equidigital number, since it uses as much as digits as its factorization.

121222101220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44459585.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121222101220111 its reverse (111022101222121), we get a palindrome (232244202442232).

The spelling of 121222101220111 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred one million, two hundred twenty thousand, one hundred eleven".