210220111211 has 8 divisors (see below), whose sum is σ = 231226329648. Its totient is φ = 191109190800.

The previous prime is 210220111207. The next prime is 210220111243. The reversal of 210220111211 is 112111022012.

It is not a de Polignac number, because 210220111211 - 2² = 210220111207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210220111291) 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, 78969410 + ... + 78972071.

It is an arithmetic number, because the mean of its divisors is an integer number (28903291206).

Almost surely, 2^210220111211 is an apocalyptic number.

210220111211 is a deficient number, since it is larger than the sum of its proper divisors (21006218437).

210220111211 is an equidigital number, since it uses as much as digits as its factorization.

210220111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157941514 (or 157941492 counting only the distinct ones).

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

Adding to 210220111211 its reverse (112111022012), we get a palindrome (322331133223).

The spelling of 210220111211 in words is "two hundred ten billion, two hundred twenty million, one hundred eleven thousand, two hundred eleven".