101212210200021 has 8 divisors (see below), whose sum is σ = 136798238444160. Its totient is φ = 66550494377952.

The previous prime is 101212210200011. The next prime is 101212210200053. The reversal of 101212210200021 is 120002012212101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101212210200021 - 2³⁴ = 101195030330837 is a prime.

It is a super-2 number, since 2×101212210200021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212210200011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231078105261 + ... + 231078105698.

It is an arithmetic number, because the mean of its divisors is an integer number (17099779805520).

Almost surely, 2^{101212210200021} is an apocalyptic number.

It is an amenable number.

101212210200021 is a deficient number, since it is larger than the sum of its proper divisors (35586028244139).

101212210200021 is an equidigital number, since it uses as much as digits as its factorization.

101212210200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462156211035.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101212210200021 its reverse (120002012212101), we get a palindrome (221214222412122).

The spelling of 101212210200021 in words is "one hundred one trillion, two hundred twelve billion, two hundred ten million, two hundred thousand, twenty-one".