102102020011121 has 8 divisors (see below), whose sum is σ = 112030663467240. Its totient is φ = 92469753971712.

The previous prime is 102102020011097. The next prime is 102102020011231. The reversal of 102102020011121 is 121110020201201.

It can be written as a sum of positive squares in 4 ways, for example, as 24790640160400 + 77311379850721 = 4979020^2 + 8792689^2 .

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

It is not a de Polignac number, because 102102020011121 - 2¹⁸ = 102102019748977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102102020011096 and 102102020011105.

It is not an unprimeable number, because it can be changed into a prime (102102020011921) 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, 74094353456 + ... + 74094354833.

It is an arithmetic number, because the mean of its divisors is an integer number (14003832933405).

Almost surely, 2^{102102020011121} is an apocalyptic number.

It is an amenable number.

102102020011121 is a deficient number, since it is larger than the sum of its proper divisors (9928643456119).

102102020011121 is a wasteful number, since it uses less digits than its factorization.

102102020011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148188708355.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102102020011121 its reverse (121110020201201), we get a palindrome (223212040212322).

The spelling of 102102020011121 in words is "one hundred two trillion, one hundred two billion, twenty million, eleven thousand, one hundred twenty-one".