121220111222101 has 8 divisors (see below), whose sum is σ = 121522855320000. Its totient is φ = 120917369361600.

The previous prime is 121220111222069. The next prime is 121220111222131. The reversal of 121220111222101 is 101222111022121.

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 121220111222101 - 2⁵ = 121220111222069 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 (121220111222131) 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, 183086550 + ... + 183747448.

It is an arithmetic number, because the mean of its divisors is an integer number (15190356915000).

Almost surely, 2^{121220111222101} is an apocalyptic number.

It is an amenable number.

121220111222101 is a deficient number, since it is larger than the sum of its proper divisors (302744097899).

121220111222101 is an equidigital number, since it uses as much as digits as its factorization.

121220111222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118699.

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

Adding to 121220111222101 its reverse (101222111022121), we get a palindrome (222442222244222).

The spelling of 121220111222101 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, one hundred one".