1010020011221 has 16 divisors (see below), whose sum is σ = 1184443411200. Its totient is φ = 852799243968.

The previous prime is 1010020011211. The next prime is 1010020011227. The reversal of 1010020011221 is 1221100200101.

It is a cyclic number.

It is not a de Polignac number, because 1010020011221 - 2²² = 1010015816917 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 (1010020011227) 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, 70495421 + ... + 70509746.

It is an arithmetic number, because the mean of its divisors is an integer number (74027713200).

Almost surely, 2^{1010020011221} is an apocalyptic number.

It is an amenable number.

1010020011221 is a deficient number, since it is larger than the sum of its proper divisors (174423399979).

1010020011221 is a wasteful number, since it uses less digits than its factorization.

1010020011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141005228.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1010020011221 its reverse (1221100200101), we get a palindrome (2231120211322).

The spelling of 1010020011221 in words is "one trillion, ten billion, twenty million, eleven thousand, two hundred twenty-one".