1020220440101 has 2 divisors, whose sum is σ = 1020220440102. Its totient is φ = 1020220440100.

The previous prime is 1020220440061. The next prime is 1020220440137. The reversal of 1020220440101 is 1010440220201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729913922500 + 290306517601 = 854350^2 + 538801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020220440101 - 2²⁶ = 1020153331237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020220440101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020220440401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110220050 + 510110220051.

It is an arithmetic number, because the mean of its divisors is an integer number (510110220051).

Almost surely, 2^{1020220440101} is an apocalyptic number.

It is an amenable number.

1020220440101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020220440101 is an equidigital number, since it uses as much as digits as its factorization.

1020220440101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1020220440101 its reverse (1010440220201), we get a palindrome (2030660660302).

The spelling of 1020220440101 in words is "one trillion, twenty billion, two hundred twenty million, four hundred forty thousand, one hundred one".