10211010212221 has 16 divisors (see below), whose sum is σ = 12568092511744. Its totient is φ = 8078594050944.

The previous prime is 10211010212191. The next prime is 10211010212233. The reversal of 10211010212221 is 12221201011201.

It is a cyclic number.

It is not a de Polignac number, because 10211010212221 - 2⁵ = 10211010212189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10211010212195 and 10211010212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211010212251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1445520 + ... + 4744633.

It is an arithmetic number, because the mean of its divisors is an integer number (785505781984).

Almost surely, 2^{10211010212221} is an apocalyptic number.

It is an amenable number.

10211010212221 is a deficient number, since it is larger than the sum of its proper divisors (2357082299523).

10211010212221 is a wasteful number, since it uses less digits than its factorization.

10211010212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208300.

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

Adding to 10211010212221 its reverse (12221201011201), we get a palindrome (22432211223422).

The spelling of 10211010212221 in words is "ten trillion, two hundred eleven billion, ten million, two hundred twelve thousand, two hundred twenty-one".