10211000012221 has 4 divisors (see below), whose sum is σ = 10218095913600. Its totient is φ = 10203904110844.

The previous prime is 10211000012153. The next prime is 10211000012243. The reversal of 10211000012221 is 12221000011201.

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 10211000012221 - 2⁷ = 10211000012093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211000010221) 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, 3547948531 + ... + 3547951408.

It is an arithmetic number, because the mean of its divisors is an integer number (2554523978400).

Almost surely, 2^{10211000012221} is an apocalyptic number.

It is an amenable number.

10211000012221 is a deficient number, since it is larger than the sum of its proper divisors (7095901379).

10211000012221 is an equidigital number, since it uses as much as digits as its factorization.

10211000012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095901378.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10211000012221 its reverse (12221000011201), we get a palindrome (22432000023422).

The spelling of 10211000012221 in words is "ten trillion, two hundred eleven billion, twelve thousand, two hundred twenty-one".