121220111221027 has 8 divisors (see below), whose sum is σ = 149193983041376. Its totient is φ = 95910417669312.

The previous prime is 121220111221007. The next prime is 121220111221031. The reversal of 121220111221027 is 720122111022121.

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 a de Polignac number, because none of the positive numbers 2^k-121220111221027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121220111220992 and 121220111221010.

It is not an unprimeable number, because it can be changed into a prime (121220111221007) 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, 666044567058 + ... + 666044567239.

It is an arithmetic number, because the mean of its divisors is an integer number (18649247880172).

Almost surely, 2^{121220111221027} is an apocalyptic number.

121220111221027 is a deficient number, since it is larger than the sum of its proper divisors (27973871820349).

121220111221027 is a wasteful number, since it uses less digits than its factorization.

121220111221027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332089134317.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 121220111221027 its reverse (720122111022121), we get a palindrome (841342222243148).

The spelling of 121220111221027 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, twenty-seven".