1220314431979 has 2 divisors, whose sum is σ = 1220314431980. Its totient is φ = 1220314431978.

The previous prime is 1220314431949. The next prime is 1220314432061. The reversal of 1220314431979 is 9791344130221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220314431979 - 2¹³ = 1220314423787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220314431949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610157215989 + 610157215990.

It is an arithmetic number, because the mean of its divisors is an integer number (610157215990).

Almost surely, 2^{1220314431979} is an apocalyptic number.

1220314431979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220314431979 is an equidigital number, since it uses as much as digits as its factorization.

1220314431979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 1220314431979 in words is "one trillion, two hundred twenty billion, three hundred fourteen million, four hundred thirty-one thousand, nine hundred seventy-nine".