1020020221101 has 16 divisors (see below), whose sum is σ = 1554333342848. Its totient is φ = 582862392000.

The previous prime is 1020020221081. The next prime is 1020020221153. The reversal of 1020020221101 is 1011220200201.

It is not a de Polignac number, because 1020020221101 - 2³⁸ = 745142314157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020020221501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2310831 + ... + 2716611.

It is an arithmetic number, because the mean of its divisors is an integer number (97145833928).

Almost surely, 2^{1020020221101} is an apocalyptic number.

It is an amenable number.

1020020221101 is a deficient number, since it is larger than the sum of its proper divisors (534313121747).

1020020221101 is a wasteful number, since it uses less digits than its factorization.

1020020221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525492.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020020221101 its reverse (1011220200201), we get a palindrome (2031240421302).

The spelling of 1020020221101 in words is "one trillion, twenty billion, twenty million, two hundred twenty-one thousand, one hundred one".