102120111121121 has 8 divisors (see below), whose sum is σ = 103364675447040. Its totient is φ = 100877705625312.

The previous prime is 102120111121051. The next prime is 102120111121129. The reversal of 102120111121121 is 121121111021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102120111121121 - 2²⁶ = 102120044012257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102120111121121.

It is not an unprimeable number, because it can be changed into a prime (102120111121129) 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, 539612345 + ... + 539801558.

It is an arithmetic number, because the mean of its divisors is an integer number (12920584430880).

Almost surely, 2^{102120111121121} is an apocalyptic number.

It is an amenable number.

102120111121121 is a deficient number, since it is larger than the sum of its proper divisors (1244564325919).

102120111121121 is a wasteful number, since it uses less digits than its factorization.

102120111121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079415055.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 102120111121121 its reverse (121121111021201), we get a palindrome (223241222142322).

The spelling of 102120111121121 in words is "one hundred two trillion, one hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-one".