1220222120501 has 2 divisors, whose sum is σ = 1220222120502. Its totient is φ = 1220222120500.

The previous prime is 1220222120483. The next prime is 1220222120503. The reversal of 1220222120501 is 1050212220221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1211353378225 + 8868742276 = 1100615^2 + 94174^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220222120501 - 2¹⁴ = 1220222104117 is a prime.

Together with 1220222120503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220222120503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610111060250 + 610111060251.

It is an arithmetic number, because the mean of its divisors is an integer number (610111060251).

Almost surely, 2^{1220222120501} is an apocalyptic number.

It is an amenable number.

1220222120501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220222120501 is an equidigital number, since it uses as much as digits as its factorization.

1220222120501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 1220222120501 its reverse (1050212220221), we get a palindrome (2270434340722).

The spelling of 1220222120501 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred twenty thousand, five hundred one".