1001212100111 has 8 divisors (see below), whose sum is σ = 1008475319040. Its totient is φ = 993949742232.

The previous prime is 1001212100087. The next prime is 1001212100131. The reversal of 1001212100111 is 1110012121001.

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 1001212100111 - 2¹⁴ = 1001212083727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001212100092 and 1001212100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001212100131) 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, 2218106 + ... + 2631048.

It is an arithmetic number, because the mean of its divisors is an integer number (126059414880).

Almost surely, 2^{1001212100111} is an apocalyptic number.

1001212100111 is a deficient number, since it is larger than the sum of its proper divisors (7263218929).

1001212100111 is a wasteful number, since it uses less digits than its factorization.

1001212100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430525.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001212100111 its reverse (1110012121001), we get a palindrome (2111224221112).

It can be divided in two parts, 10012121001 and 11, that multiplied together give a palindrome (110133331011).

The spelling of 1001212100111 in words is "one trillion, one billion, two hundred twelve million, one hundred thousand, one hundred eleven".