1220202212211 has 12 divisors (see below), whose sum is σ = 1762882864288. Its totient is φ = 813298037904.

The previous prime is 1220202212209. The next prime is 1220202212261. The reversal of 1220202212211 is 1122122020221.

It is a happy number.

1220202212211 is a `hidden beast` number, since 1 + 220 + 2 + 0 + 221 + 221 + 1 = 666.

It is not a de Polignac number, because 1220202212211 - 2¹ = 1220202212209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220202212261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14129860 + ... + 14215953.

Almost surely, 2^{1220202212211} is an apocalyptic number.

1220202212211 is a deficient number, since it is larger than the sum of its proper divisors (542680652077).

1220202212211 is a wasteful number, since it uses less digits than its factorization.

1220202212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28350602 (or 28350599 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1220202212211 its reverse (1122122020221), we get a palindrome (2342324232432).

The spelling of 1220202212211 in words is "one trillion, two hundred twenty billion, two hundred two million, two hundred twelve thousand, two hundred eleven".