102012021012111 has 80 divisors (see below), whose sum is σ = 162794655999360. Its totient is φ = 56786647216320.

The previous prime is 102012021012067. The next prime is 102012021012157. The reversal of 102012021012111 is 111210120210201.

It is a happy number.

It is not a de Polignac number, because 102012021012111 - 2¹⁴ = 102012020995727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012021017111) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 116952781 + ... + 117821801.

It is an arithmetic number, because the mean of its divisors is an integer number (2034933199992).

Almost surely, 2^{102012021012111} is an apocalyptic number.

102012021012111 is a deficient number, since it is larger than the sum of its proper divisors (60782634987249).

102012021012111 is an frugal number, since it uses more digits than its factorization.

102012021012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869474 (or 869453 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102012021012111 its reverse (111210120210201), we get a palindrome (213222141222312).

The spelling of 102012021012111 in words is "one hundred two trillion, twelve billion, twenty-one million, twelve thousand, one hundred eleven".