1212222201201 has 32 divisors (see below), whose sum is σ = 1960246640640. Its totient is φ = 734267754000.

The previous prime is 1212222201199. The next prime is 1212222201209. The reversal of 1212222201201 is 1021022222121.

It is a happy number.

1212222201201 is a `hidden beast` number, since 1 + 21 + 222 + 220 + 1 + 201 = 666.

It is not a de Polignac number, because 1212222201201 - 2¹ = 1212222201199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212222201209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615025 + ... + 1674126.

It is an arithmetic number, because the mean of its divisors is an integer number (61257707520).

Almost surely, 2^{1212222201201} is an apocalyptic number.

1212222201201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212222201201 is a deficient number, since it is larger than the sum of its proper divisors (748024439439).

1212222201201 is a wasteful number, since it uses less digits than its factorization.

1212222201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290954 (or 2290948 counting only the distinct ones).

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

Adding to 1212222201201 its reverse (1021022222121), we get a palindrome (2233244423322).

The spelling of 1212222201201 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred one thousand, two hundred one".