201220001210111 has 16 divisors (see below), whose sum is σ = 218963775356928. Its totient is φ = 183803654143200.

The previous prime is 201220001210087. The next prime is 201220001210131. The reversal of 201220001210111 is 111012100022102.

It is a de Polignac number, because none of the positive numbers 2^k-201220001210111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220001210131) 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, 78128255 + ... + 80662656.

It is an arithmetic number, because the mean of its divisors is an integer number (13685235959808).

Almost surely, 2^{201220001210111} is an apocalyptic number.

201220001210111 is a deficient number, since it is larger than the sum of its proper divisors (17743774146817).

201220001210111 is a wasteful number, since it uses less digits than its factorization.

201220001210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158791942.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201220001210111 its reverse (111012100022102), we get a palindrome (312232101232213).

The spelling of 201220001210111 in words is "two hundred one trillion, two hundred twenty billion, one million, two hundred ten thousand, one hundred eleven".