201102121 has 8 divisors (see below), whose sum is σ = 221198688.
Its totient is φ = 182818900.
The previous prime is 201102119. The next prime is 201102151. The reversal of 201102121 is 121201102.
It is not a de Polignac number, because 201102121 - 21 = 201102119 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 201102098 and 201102107.
It is not an unprimeable number, because it can be changed into a prime (201102101) 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, 74215 + ... + 76876.
It is an arithmetic number, because the mean of its divisors is an integer number (27649836).
Almost surely, 2201102121 is an apocalyptic number.
It is an amenable number.
201102121 is a deficient number, since it is larger than the sum of its proper divisors (20096567).
201102121 is an equidigital number, since it uses as much as digits as its factorization.
201102121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 151124 (or 151102 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 201102121 is about 14181.0479514033.
The cubic root of 201102121 is about 585.8757876021.
Adding to 201102121 its reverse (121201102), we get a palindrome (322303223).
It can be divided in two parts, 201102 and 121, that multiplied together give a palindrome (24333342).
The spelling of 201102121 in words is "two hundred one million, one hundred two thousand, one hundred twenty-one".