1220212021079 has 2 divisors, whose sum is σ = 1220212021080. Its totient is φ = 1220212021078.

The previous prime is 1220212021057. The next prime is 1220212021163. The reversal of 1220212021079 is 9701202120221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220212021079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220212021279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610106010539 + 610106010540.

It is an arithmetic number, because the mean of its divisors is an integer number (610106010540).

Almost surely, 2^{1220212021079} is an apocalyptic number.

1220212021079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220212021079 is an equidigital number, since it uses as much as digits as its factorization.

1220212021079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 1220212021079 in words is "one trillion, two hundred twenty billion, two hundred twelve million, twenty-one thousand, seventy-nine".