10101200020021 has 48 divisors (see below), whose sum is σ = 11295437380864. Its totient is φ = 9025188480000.

The previous prime is 10101200020003. The next prime is 10101200020027. The reversal of 10101200020021 is 12002000210101.

It is not a de Polignac number, because 10101200020021 - 2⁹ = 10101200019509 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 (10101200020027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3005413381 + ... + 3005416741.

Almost surely, 2^{10101200020021} is an apocalyptic number.

10101200020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10101200020021 is a deficient number, since it is larger than the sum of its proper divisors (1194237360843).

10101200020021 is a wasteful number, since it uses less digits than its factorization.

10101200020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234 (or 5223 counting only the distinct ones).

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

Adding to 10101200020021 its reverse (12002000210101), we get a palindrome (22103200230122).

The spelling of 10101200020021 in words is "ten trillion, one hundred one billion, two hundred million, twenty thousand, twenty-one".