1220121011227 has 2 divisors, whose sum is σ = 1220121011228. Its totient is φ = 1220121011226.

The previous prime is 1220121011209. The next prime is 1220121011243. The reversal of 1220121011227 is 7221101210221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220121011227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220121011198 and 1220121011207.

It is not a weakly prime, because it can be changed into another prime (1220121011267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610060505613 + 610060505614.

It is an arithmetic number, because the mean of its divisors is an integer number (610060505614).

Almost surely, 2^{1220121011227} is an apocalyptic number.

1220121011227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220121011227 is an equidigital number, since it uses as much as digits as its factorization.

1220121011227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1220121011227 its reverse (7221101210221), we get a palindrome (8441222221448).

The spelling of 1220121011227 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, eleven thousand, two hundred twenty-seven".