1200102211111 has 24 divisors (see below), whose sum is σ = 1276771242240. Its totient is φ = 1124902481040.

The previous prime is 1200102211109. The next prime is 1200102211127. The reversal of 1200102211111 is 1111122010021.

It is a happy number.

It is not a de Polignac number, because 1200102211111 - 2¹ = 1200102211109 is a prime.

It is a super-2 number, since 2×1200102211111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200102211091 and 1200102211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200102211181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113137170 + ... + 113147776.

It is an arithmetic number, because the mean of its divisors is an integer number (53198801760).

Almost surely, 2^{1200102211111} is an apocalyptic number.

1200102211111 is a deficient number, since it is larger than the sum of its proper divisors (76669031129).

1200102211111 is a wasteful number, since it uses less digits than its factorization.

1200102211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235 (or 11104 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1200102211111 its reverse (1111122010021), we get a palindrome (2311224221132).

The spelling of 1200102211111 in words is "one trillion, two hundred billion, one hundred two million, two hundred eleven thousand, one hundred eleven".