1212001012111 has 8 divisors (see below), whose sum is σ = 1304332816464. Its totient is φ = 1122006721920.

The previous prime is 1212001012109. The next prime is 1212001012127. The reversal of 1212001012111 is 1112101002121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212001012111 - 2¹ = 1212001012109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212001012091 and 1212001012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001012151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584377465 + ... + 584379538.

It is an arithmetic number, because the mean of its divisors is an integer number (163041602058).

Almost surely, 2^{1212001012111} is an apocalyptic number.

1212001012111 is a deficient number, since it is larger than the sum of its proper divisors (92331804353).

1212001012111 is a wasteful number, since it uses less digits than its factorization.

1212001012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168757081.

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

Adding to 1212001012111 its reverse (1112101002121), we get a palindrome (2324102014232).

It can be divided in two parts, 121200 and 1012111, that added together give a palindrome (1133311).

The spelling of 1212001012111 in words is "one trillion, two hundred twelve billion, one million, twelve thousand, one hundred eleven".