1212201102111 has 16 divisors (see below), whose sum is σ = 1715087497824. Its totient is φ = 758932429824.

The previous prime is 1212201102109. The next prime is 1212201102157. The reversal of 1212201102111 is 1112011022121.

It is a happy number.

It is not a de Polignac number, because 1212201102111 - 2¹ = 1212201102109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201102911) 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, 25981780 + ... + 26028393.

It is an arithmetic number, because the mean of its divisors is an integer number (107192968614).

Almost surely, 2^{1212201102111} is an apocalyptic number.

1212201102111 is a deficient number, since it is larger than the sum of its proper divisors (502886395713).

1212201102111 is a wasteful number, since it uses less digits than its factorization.

1212201102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52010650.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212201102111 its reverse (1112011022121), we get a palindrome (2324212124232).

The spelling of 1212201102111 in words is "one trillion, two hundred twelve billion, two hundred one million, one hundred two thousand, one hundred eleven".