1221022220983 has 2 divisors, whose sum is σ = 1221022220984. Its totient is φ = 1221022220982.

The previous prime is 1221022220969. The next prime is 1221022221049. The reversal of 1221022220983 is 3890222201221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221022220983 - 2²¹ = 1221020123831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221022220953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610511110491 + 610511110492.

It is an arithmetic number, because the mean of its divisors is an integer number (610511110492).

Almost surely, 2^{1221022220983} is an apocalyptic number.

1221022220983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221022220983 is an equidigital number, since it uses as much as digits as its factorization.

1221022220983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 1221022220983 in words is "one trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty thousand, nine hundred eighty-three".