1220210100211 has 4 divisors (see below), whose sum is σ = 1220315968432. Its totient is φ = 1220104231992.

The previous prime is 1220210100191. The next prime is 1220210100217. The reversal of 1220210100211 is 1120010120221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220210100211 - 2²¹ = 1220208003059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220210100191 and 1220210100200.

It is not an unprimeable number, because it can be changed into a prime (1220210100217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52916820 + ... + 52939873.

It is an arithmetic number, because the mean of its divisors is an integer number (305078992108).

Almost surely, 2^{1220210100211} is an apocalyptic number.

1220210100211 is a deficient number, since it is larger than the sum of its proper divisors (105868221).

1220210100211 is a wasteful number, since it uses less digits than its factorization.

1220210100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105868220.

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

Adding to 1220210100211 its reverse (1120010120221), we get a palindrome (2340220220432).

The spelling of 1220210100211 in words is "one trillion, two hundred twenty billion, two hundred ten million, one hundred thousand, two hundred eleven".