1212002113111 has 4 divisors (see below), whose sum is σ = 1212174304000. Its totient is φ = 1211829922224.

The previous prime is 1212002113103. The next prime is 1212002113159. The reversal of 1212002113111 is 1113112002121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212002113111 - 2³ = 1212002113103 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 (1212002113181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86084886 + ... + 86098963.

It is an arithmetic number, because the mean of its divisors is an integer number (303043576000).

Almost surely, 2^{1212002113111} is an apocalyptic number.

1212002113111 is a deficient number, since it is larger than the sum of its proper divisors (172190889).

1212002113111 is an equidigital number, since it uses as much as digits as its factorization.

1212002113111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172190888.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1212002113111 its reverse (1113112002121), we get a palindrome (2325114115232).

The spelling of 1212002113111 in words is "one trillion, two hundred twelve billion, two million, one hundred thirteen thousand, one hundred eleven".