101210200021 has 16 divisors (see below), whose sum is σ = 117708480000. Its totient is φ = 85223820528.

The previous prime is 101210199997. The next prime is 101210200079. The reversal of 101210200021 is 120002012101.

It is not a de Polignac number, because 101210200021 - 2²¹ = 101208102869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210199980 and 101210200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210209021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537346 + ... + 700828.

It is an arithmetic number, because the mean of its divisors is an integer number (7356780000).

Almost surely, 2^101210200021 is an apocalyptic number.

It is an amenable number.

101210200021 is a deficient number, since it is larger than the sum of its proper divisors (16498279979).

101210200021 is a wasteful number, since it uses less digits than its factorization.

101210200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165048.

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

Adding to 101210200021 its reverse (120002012101), we get a palindrome (221212212122).

The spelling of 101210200021 in words is "one hundred one billion, two hundred ten million, two hundred thousand, twenty-one".