1222101121211 has 6 divisors (see below), whose sum is σ = 1277546163180. Its totient is φ = 1168966289348.

The previous prime is 1222101121139. The next prime is 1222101121223. The reversal of 1222101121211 is 1121211012221.

It is not a de Polignac number, because 1222101121211 - 2¹⁰ = 1222101120187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222101121211.

It is not an unprimeable number, because it can be changed into a prime (1222100121211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1155104501 + ... + 1155105558.

It is an arithmetic number, because the mean of its divisors is an integer number (212924360530).

Almost surely, 2^{1222101121211} is an apocalyptic number.

1222101121211 is a deficient number, since it is larger than the sum of its proper divisors (55445041969).

1222101121211 is an equidigital number, since it uses as much as digits as its factorization.

1222101121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310210105 (or 2310210082 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222101121211 its reverse (1121211012221), we get a palindrome (2343312133432).

It can be divided in two parts, 122210 and 1121211, that added together give a palindrome (1243421).

The spelling of 1222101121211 in words is "one trillion, two hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, two hundred eleven".