10212112201021 has 8 divisors (see below), whose sum is σ = 10813515924600. Its totient is φ = 9610785282048.

The previous prime is 10212112200971. The next prime is 10212112201087. The reversal of 10212112201021 is 12010221121201.

It can be written as a sum of positive squares in 4 ways, for example, as 976165736121 + 9235946464900 = 988011^2 + 3039070^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10212112201021 - 2¹⁷ = 10212112069949 is a prime.

It is a super-2 number, since 2×10212112201021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212112200986 and 10212112201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212112231021) 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 7 ways as a sum of consecutive naturals, for example, 18927286 + ... + 19459351.

It is an arithmetic number, because the mean of its divisors is an integer number (1351689490575).

Almost surely, 2^{10212112201021} is an apocalyptic number.

It is an amenable number.

10212112201021 is a deficient number, since it is larger than the sum of its proper divisors (601403723579).

10212112201021 is a wasteful number, since it uses less digits than its factorization.

10212112201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38402303.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10212112201021 its reverse (12010221121201), we get a palindrome (22222333322222).

The spelling of 10212112201021 in words is "ten trillion, two hundred twelve billion, one hundred twelve million, two hundred one thousand, twenty-one".