1212120222201 has 32 divisors (see below), whose sum is σ = 2052952320000. Its totient is φ = 692408846160.

The previous prime is 1212120222179. The next prime is 1212120222227. The reversal of 1212120222201 is 1022220212121.

It is a happy number.

1212120222201 is a `hidden beast` number, since 121 + 2 + 120 + 222 + 201 = 666.

It is not a de Polignac number, because 1212120222201 - 2⁵ = 1212120222169 is a prime.

It is a super-2 number, since 2×1212120222201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212120222101) 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, 502435 + ... + 1636056.

It is an arithmetic number, because the mean of its divisors is an integer number (64154760000).

Almost surely, 2^{1212120222201} is an apocalyptic number.

It is an amenable number.

1212120222201 is a deficient number, since it is larger than the sum of its proper divisors (840832097799).

1212120222201 is a wasteful number, since it uses less digits than its factorization.

1212120222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141506 (or 2141500 counting only the distinct ones).

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

Adding to 1212120222201 its reverse (1022220212121), we get a palindrome (2234340434322).

The spelling of 1212120222201 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, two hundred one".