7121101 has 8 divisors (see below), whose sum is σ = 7847840. Its totient is φ = 6419952.

The previous prime is 7121089. The next prime is 7121137. The reversal of 7121101 is 1011217.

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 7121101 - 2¹³ = 7112909 is a prime.

It is a super-3 number, since 3×7121101³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

7121101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121141) 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, 5811 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (980980).

Almost surely, 2^7121101 is an apocalyptic number.

It is an amenable number.

7121101 is a deficient number, since it is larger than the sum of its proper divisors (726739).

7121101 is a wasteful number, since it uses less digits than its factorization.

7121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12795.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 7121101 is about 2668.5391134477. The cubic root of 7121101 is about 192.3899500285.

Adding to 7121101 its reverse (1011217), we get a palindrome (8132318).

The spelling of 7121101 in words is "seven million, one hundred twenty-one thousand, one hundred one".