1021020220106 has 8 divisors (see below), whose sum is σ = 1531556346564. Its totient is φ = 510501437920.

The previous prime is 1021020220039. The next prime is 1021020220117. The reversal of 1021020220106 is 6010220201201.

It can be written as a sum of positive squares in 2 ways, for example, as 930374064481 + 90646155625 = 964559^2 + 301075^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4187885 + ... + 4424976.

Almost surely, 2^{1021020220106} is an apocalyptic number.

1021020220106 is a deficient number, since it is larger than the sum of its proper divisors (510536126458).

1021020220106 is an equidigital number, since it uses as much as digits as its factorization.

1021020220106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672136.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021020220106 its reverse (6010220201201), we get a palindrome (7031240421307).

The spelling of 1021020220106 in words is "one trillion, twenty-one billion, twenty million, two hundred twenty thousand, one hundred six".