201222210202157 has 2 divisors, whose sum is σ = 201222210202158. Its totient is φ = 201222210202156.

The previous prime is 201222210202151. The next prime is 201222210202217. The reversal of 201222210202157 is 751202012222102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157728330292036 + 43493879910121 = 12558994^2 + 6594989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201222210202157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201222210202151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611105101078 + 100611105101079.

It is an arithmetic number, because the mean of its divisors is an integer number (100611105101079).

Almost surely, 2^{201222210202157} is an apocalyptic number.

It is an amenable number.

201222210202157 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222210202157 is an equidigital number, since it uses as much as digits as its factorization.

201222210202157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 201222210202157 its reverse (751202012222102), we get a palindrome (952424222424259).

The spelling of 201222210202157 in words is "two hundred one trillion, two hundred twenty-two billion, two hundred ten million, two hundred two thousand, one hundred fifty-seven".