1212202211211 has 16 divisors (see below), whose sum is σ = 1795877260320. Its totient is φ = 808124847840.

The previous prime is 1212202211161. The next prime is 1212202211219. The reversal of 1212202211211 is 1121122022121.

1212202211211 is a `hidden beast` number, since 1 + 21 + 220 + 2 + 211 + 211 = 666.

It is not a de Polignac number, because 1212202211211 - 2⁶ = 1212202211147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212202211219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2439601 + ... + 2894141.

It is an arithmetic number, because the mean of its divisors is an integer number (112242328770).

Almost surely, 2^{1212202211211} is an apocalyptic number.

1212202211211 is a deficient number, since it is larger than the sum of its proper divisors (583675049109).

1212202211211 is an equidigital number, since it uses as much as digits as its factorization.

1212202211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553323 (or 553317 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1212202211211 its reverse (1121122022121), we get a palindrome (2333324233332).

The spelling of 1212202211211 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred eleven thousand, two hundred eleven".