201111121221102 has 32 divisors (see below), whose sum is σ = 449913022884000. Its totient is φ = 66587127381504.

The previous prime is 201111121221089. The next prime is 201111121221169. The reversal of 201111121221102 is 201122121111102.

It is a happy number.

201111121221102 is a `hidden beast` number, since 201 + 111 + 121 + 221 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12497575923 + ... + 12497592014.

It is an arithmetic number, because the mean of its divisors is an integer number (14059781965125).

Almost surely, 2^{201111121221102} is an apocalyptic number.

201111121221102 is an abundant number, since it is smaller than the sum of its proper divisors (248801901662898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201111121221102 is a wasteful number, since it uses less digits than its factorization.

201111121221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24995168097 (or 24995168091 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 201111121221102 its reverse (201122121111102), we get a palindrome (402233242332204).

The spelling of 201111121221102 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred two".