1020120221105 has 8 divisors (see below), whose sum is σ = 1224667641600. Its totient is φ = 815747259376.

The previous prime is 1020120221083. The next prime is 1020120221143. The reversal of 1020120221105 is 5011220210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020120221105 - 2¹² = 1020120217009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43601825 + ... + 43625214.

It is an arithmetic number, because the mean of its divisors is an integer number (153083455200).

Almost surely, 2^{1020120221105} is an apocalyptic number.

It is an amenable number.

1020120221105 is a deficient number, since it is larger than the sum of its proper divisors (204547420495).

1020120221105 is an equidigital number, since it uses as much as digits as its factorization.

1020120221105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87229383.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1020120221105 its reverse (5011220210201), we get a palindrome (6031340431306).

The spelling of 1020120221105 in words is "one trillion, twenty billion, one hundred twenty million, two hundred twenty-one thousand, one hundred five".