1012212100111 has 8 divisors (see below), whose sum is σ = 1012885496064. Its totient is φ = 1011538862880.

The previous prime is 1012212100093. The next prime is 1012212100127. The reversal of 1012212100111 is 1110012122101.

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 a de Polignac number, because none of the positive numbers 2^k-1012212100111 is a prime.

It is a super-2 number, since 2×1012212100111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012212100091 and 1012212100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012212101111) 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, 14437401 + ... + 14507341.

It is an arithmetic number, because the mean of its divisors is an integer number (126610687008).

Almost surely, 2^{1012212100111} is an apocalyptic number.

1012212100111 is a deficient number, since it is larger than the sum of its proper divisors (673395953).

1012212100111 is an equidigital number, since it uses as much as digits as its factorization.

1012212100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79361.

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

Adding to 1012212100111 its reverse (1110012122101), we get a palindrome (2122224222212).

The spelling of 1012212100111 in words is "one trillion, twelve billion, two hundred twelve million, one hundred thousand, one hundred eleven".