10010101021221 has 8 divisors (see below), whose sum is σ = 15253487270464. Its totient is φ = 5720057726400.

The previous prime is 10010101021199. The next prime is 10010101021247. The reversal of 10010101021221 is 12212010101001.

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

It is not a de Polignac number, because 10010101021221 - 2³⁸ = 9735223114277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010101021197 and 10010101021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010101029221) 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, 238335738580 + ... + 238335738621.

It is an arithmetic number, because the mean of its divisors is an integer number (1906685908808).

Almost surely, 2^{10010101021221} is an apocalyptic number.

It is an amenable number.

10010101021221 is a deficient number, since it is larger than the sum of its proper divisors (5243386249243).

10010101021221 is an equidigital number, since it uses as much as digits as its factorization.

10010101021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476671477211.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10010101021221 its reverse (12212010101001), we get a palindrome (22222111122222).

The spelling of 10010101021221 in words is "ten trillion, ten billion, one hundred one million, twenty-one thousand, two hundred twenty-one".