102121141111 has 16 divisors (see below), whose sum is σ = 115656660000. Its totient is φ = 89317043200.

The previous prime is 102121141091. The next prime is 102121141147. The reversal of 102121141111 is 111141121201.

It is a happy number.

It is not a de Polignac number, because 102121141111 - 2¹¹ = 102121139063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121141411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479986 + ... + 659263.

It is an arithmetic number, because the mean of its divisors is an integer number (7228541250).

Almost surely, 2^102121141111 is an apocalyptic number.

102121141111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102121141111 is a deficient number, since it is larger than the sum of its proper divisors (13535518889).

102121141111 is a wasteful number, since it uses less digits than its factorization.

102121141111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139570.

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

Adding to 102121141111 its reverse (111141121201), we get a palindrome (213262262312).

The spelling of 102121141111 in words is "one hundred two billion, one hundred twenty-one million, one hundred forty-one thousand, one hundred eleven".