10212021011221 has 4 divisors (see below), whose sum is σ = 10307460460032. Its totient is φ = 10116581562412.

The previous prime is 10212021011209. The next prime is 10212021011249. The reversal of 10212021011221 is 12211012021201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10212021011221 - 2¹³ = 10212021003029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212021011195 and 10212021011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212021011281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47719724245 + ... + 47719724458.

It is an arithmetic number, because the mean of its divisors is an integer number (2576865115008).

Almost surely, 2^{10212021011221} is an apocalyptic number.

It is an amenable number.

10212021011221 is a deficient number, since it is larger than the sum of its proper divisors (95439448811).

10212021011221 is an equidigital number, since it uses as much as digits as its factorization.

10212021011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95439448810.

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

Adding to 10212021011221 its reverse (12211012021201), we get a palindrome (22423033032422).

The spelling of 10212021011221 in words is "ten trillion, two hundred twelve billion, twenty-one million, eleven thousand, two hundred twenty-one".