201111121222102 has 64 divisors (see below), whose sum is σ = 387016847078400. Its totient is φ = 76230590567040.

The previous prime is 201111121222093. The next prime is 201111121222127. The reversal of 201111121222102 is 201222121111102.

It is a happy number.

It is a super-2 number, since 2×201111121222102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201111121222102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144742402 + ... + 146125237.

It is an arithmetic number, because the mean of its divisors is an integer number (6047138235600).

Almost surely, 2^{201111121222102} is an apocalyptic number.

201111121222102 is a deficient number, since it is larger than the sum of its proper divisors (185905725856298).

201111121222102 is a wasteful number, since it uses less digits than its factorization.

201111121222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290867821.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201111121222102 its reverse (201222121111102), we get a palindrome (402333242333204).

The spelling of 201111121222102 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred two".