211010001120221 has 4 divisors (see below), whose sum is σ = 211026722743200. Its totient is φ = 210993279497244.

The previous prime is 211010001120203. The next prime is 211010001120319. The reversal of 211010001120221 is 122021100010112.

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 211010001120221 - 2⁴² = 206611954609117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211010001120196 and 211010001120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010001420221) 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, 8360792561 + ... + 8360817798.

It is an arithmetic number, because the mean of its divisors is an integer number (52756680685800).

Almost surely, 2^{211010001120221} is an apocalyptic number.

It is an amenable number.

211010001120221 is a deficient number, since it is larger than the sum of its proper divisors (16721622979).

211010001120221 is a wasteful number, since it uses less digits than its factorization.

211010001120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16721622978.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211010001120221 its reverse (122021100010112), we get a palindrome (333031101130333).

The spelling of 211010001120221 in words is "two hundred eleven trillion, ten billion, one million, one hundred twenty thousand, two hundred twenty-one".