1021000220101 has 16 divisors (see below), whose sum is σ = 1067956633600. Its totient is φ = 974936055600.

The previous prime is 1021000220083. The next prime is 1021000220117. The reversal of 1021000220101 is 1010220001201.

It is a cyclic number.

It is not a de Polignac number, because 1021000220101 - 2¹¹ = 1021000218053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021000220131) 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, 3734956 + ... + 3998986.

It is an arithmetic number, because the mean of its divisors is an integer number (66747289600).

Almost surely, 2^{1021000220101} is an apocalyptic number.

It is an amenable number.

1021000220101 is a deficient number, since it is larger than the sum of its proper divisors (46956413499).

1021000220101 is a wasteful number, since it uses less digits than its factorization.

1021000220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265720.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021000220101 its reverse (1010220001201), we get a palindrome (2031220221302).

The spelling of 1021000220101 in words is "one trillion, twenty-one billion, two hundred twenty thousand, one hundred one".