1221022020107 has 2 divisors, whose sum is σ = 1221022020108. Its totient is φ = 1221022020106.

The previous prime is 1221022020089. The next prime is 1221022020151. The reversal of 1221022020107 is 7010202201221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221022020107 - 2¹⁰ = 1221022019083 is a prime.

It is a super-2 number, since 2×1221022020107² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221022020167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610511010053 + 610511010054.

It is an arithmetic number, because the mean of its divisors is an integer number (610511010054).

Almost surely, 2^{1221022020107} is an apocalyptic number.

1221022020107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221022020107 is an equidigital number, since it uses as much as digits as its factorization.

1221022020107 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 20.

Adding to 1221022020107 its reverse (7010202201221), we get a palindrome (8231224221328).

The spelling of 1221022020107 in words is "one trillion, two hundred twenty-one billion, twenty-two million, twenty thousand, one hundred seven".