10101011200021 has 32 divisors (see below), whose sum is σ = 12303759824640. Its totient is φ = 8095000206336.

The previous prime is 10101011200019. The next prime is 10101011200079. The reversal of 10101011200021 is 12000211010101.

It is a cyclic number.

It is not a de Polignac number, because 10101011200021 - 2¹ = 10101011200019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101011199980 and 10101011200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101011600021) 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 31 ways as a sum of consecutive naturals, for example, 25101810 + ... + 25501036.

It is an arithmetic number, because the mean of its divisors is an integer number (384492494520).

Almost surely, 2^{10101011200021} is an apocalyptic number.

It is an amenable number.

10101011200021 is a deficient number, since it is larger than the sum of its proper divisors (2202748624619).

10101011200021 is a wasteful number, since it uses less digits than its factorization.

10101011200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400653.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10101011200021 its reverse (12000211010101), we get a palindrome (22101222210122).

It can be divided in two parts, 1010101 and 1200021, that multiplied together give a palindrome (1212142412121).

The spelling of 10101011200021 in words is "ten trillion, one hundred one billion, eleven million, two hundred thousand, twenty-one".