1202121222201 has 12 divisors (see below), whose sum is σ = 1740196883412. Its totient is φ = 799660503936.

The previous prime is 1202121222191. The next prime is 1202121222319. The reversal of 1202121222201 is 1022221212021.

It is a happy number.

1202121222201 is a `hidden beast` number, since 120 + 2 + 121 + 222 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1159541312400 + 42579909801 = 1076820^2 + 206349^2 .

It is not a de Polignac number, because 1202121222201 - 2¹⁰ = 1202121221177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1202121222101) 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, 146132676 + ... + 146140901.

It is an arithmetic number, because the mean of its divisors is an integer number (145016406951).

Almost surely, 2^{1202121222201} is an apocalyptic number.

It is an amenable number.

1202121222201 is a deficient number, since it is larger than the sum of its proper divisors (538075661211).

1202121222201 is a wasteful number, since it uses less digits than its factorization.

1202121222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292274040 (or 292274037 counting only the distinct ones).

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

Adding to 1202121222201 its reverse (1022221212021), we get a palindrome (2224342434222).

The spelling of 1202121222201 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred one".