1212001110001 has 8 divisors (see below), whose sum is σ = 1330604578944. Its totient is φ = 1094801232720.

The previous prime is 1212001109993. The next prime is 1212001110007. The reversal of 1212001110001 is 1000111002121.

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 1212001110001 - 2³ = 1212001109993 is a prime.

It is a super-2 number, since 2×1212001110001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212001110001.

It is not an unprimeable number, because it can be changed into a prime (1212001110007) 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, 350896105 + ... + 350899558.

It is an arithmetic number, because the mean of its divisors is an integer number (166325572368).

Almost surely, 2^{1212001110001} is an apocalyptic number.

1212001110001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212001110001 is a deficient number, since it is larger than the sum of its proper divisors (118603468943).

1212001110001 is a wasteful number, since it uses less digits than its factorization.

1212001110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701795831.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1212001110001 its reverse (1000111002121), we get a palindrome (2212112112122).

The spelling of 1212001110001 in words is "one trillion, two hundred twelve billion, one million, one hundred ten thousand, one".