10212001121221 has 8 divisors (see below), whose sum is σ = 10337185000800. Its totient is φ = 10086868378032.

The previous prime is 10212001121207. The next prime is 10212001121233. The reversal of 10212001121221 is 12212110021201.

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 10212001121221 - 2⁴³ = 1415908099013 is a prime.

It is a super-2 number, since 2×10212001121221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10212001121195 and 10212001121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212001121521) 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, 12382171 + ... + 13181128.

It is an arithmetic number, because the mean of its divisors is an integer number (1292148125100).

Almost surely, 2^{10212001121221} is an apocalyptic number.

It is an amenable number.

10212001121221 is a deficient number, since it is larger than the sum of its proper divisors (125183879579).

10212001121221 is an equidigital number, since it uses as much as digits as its factorization.

10212001121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25568195.

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

Adding to 10212001121221 its reverse (12212110021201), we get a palindrome (22424111142422).

The spelling of 10212001121221 in words is "ten trillion, two hundred twelve billion, one million, one hundred twenty-one thousand, two hundred twenty-one".