102012012111 has 24 divisors (see below), whose sum is σ = 144353767680. Its totient is φ = 64068580944.

The previous prime is 102012012061. The next prime is 102012012127. The reversal of 102012012111 is 111210210201.

It is not a de Polignac number, because 102012012111 - 2¹⁷ = 102011881039 is a prime.

It is a super-2 number, since 2×102012012111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012012131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69255 + ... + 456968.

It is an arithmetic number, because the mean of its divisors is an integer number (6014740320).

Almost surely, 2^102012012111 is an apocalyptic number.

102012012111 is a deficient number, since it is larger than the sum of its proper divisors (42341755569).

102012012111 is a wasteful number, since it uses less digits than its factorization.

102012012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526443 (or 526424 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102012012111 its reverse (111210210201), we get a palindrome (213222222312).

The spelling of 102012012111 in words is "one hundred two billion, twelve million, twelve thousand, one hundred eleven".