102061121 has 4 divisors (see below), whose sum is σ = 105580500. Its totient is φ = 98541744.

The previous prime is 102061109. The next prime is 102061129. The reversal of 102061121 is 121160201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16313521 + 85747600 = 4039^2 + 9260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102061121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102061096 and 102061105.

It is not an unprimeable number, because it can be changed into a prime (102061129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759646 + ... + 1759703.

It is an arithmetic number, because the mean of its divisors is an integer number (26395125).

Almost surely, 2^102061121 is an apocalyptic number.

It is an amenable number.

102061121 is a deficient number, since it is larger than the sum of its proper divisors (3519379).

102061121 is an equidigital number, since it uses as much as digits as its factorization.

102061121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519378.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 102061121 is about 10102.5304255914. The cubic root of 102061121 is about 467.3261801497.

The spelling of 102061121 in words is "one hundred two million, sixty-one thousand, one hundred twenty-one".