10101021222221 has 8 divisors (see below), whose sum is σ = 10137820772664. Its totient is φ = 10064227720960.

The previous prime is 10101021222203. The next prime is 10101021222239. The reversal of 10101021222221 is 12222212010101.

10101021222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10101021222203) and next prime (10101021222239).

It can be written as a sum of positive squares in 4 ways, for example, as 5220836557225 + 4880184664996 = 2284915^2 + 2209114^2 .

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 10101021222221 - 2³⁴ = 10083841353037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10101021222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101021222421) 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, 1846985 + ... + 4859361.

It is an arithmetic number, because the mean of its divisors is an integer number (1267227596583).

Almost surely, 2^{10101021222221} is an apocalyptic number.

It is an amenable number.

10101021222221 is a deficient number, since it is larger than the sum of its proper divisors (36799550443).

10101021222221 is a wasteful number, since it uses less digits than its factorization.

10101021222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024591.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10101021222221 its reverse (12222212010101), we get a palindrome (22323233232322).

The spelling of 10101021222221 in words is "ten trillion, one hundred one billion, twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".