1012100122111 has 6 divisors (see below), whose sum is σ = 1095942735960. Its totient is φ = 934246266408.

The previous prime is 1012100122051. The next prime is 1012100122123. The reversal of 1012100122111 is 1112210012101.

It is a happy number.

It is not a de Polignac number, because 1012100122111 - 2⁷ = 1012100121983 is a prime.

It is a super-2 number, since 2×1012100122111² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012100122091 and 1012100122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012100122171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2994378891 + ... + 2994379228.

It is an arithmetic number, because the mean of its divisors is an integer number (182657122660).

Almost surely, 2^{1012100122111} is an apocalyptic number.

1012100122111 is a deficient number, since it is larger than the sum of its proper divisors (83842613849).

1012100122111 is an equidigital number, since it uses as much as digits as its factorization.

1012100122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988758145 (or 5988758132 counting only the distinct ones).

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

Adding to 1012100122111 its reverse (1112210012101), we get a palindrome (2124310134212).

The spelling of 1012100122111 in words is "one trillion, twelve billion, one hundred million, one hundred twenty-two thousand, one hundred eleven".