30101121 has 12 divisors (see below), whose sum is σ = 44192980. Its totient is φ = 19738080.

The previous prime is 30101107. The next prime is 30101147. The reversal of 30101121 is 12110103.

It can be written as a sum of positive squares in 2 ways, for example, as 2852721 + 27248400 = 1689^2 + 5220^2 .

It is not a de Polignac number, because 30101121 - 2¹³ = 30092929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26866 + ... + 27963.

Almost surely, 2^30101121 is an apocalyptic number.

It is an amenable number.

30101121 is a deficient number, since it is larger than the sum of its proper divisors (14091859).

30101121 is a wasteful number, since it uses less digits than its factorization.

30101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54896 (or 54893 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 30101121 is about 5486.4488514885. The cubic root of 30101121 is about 311.0719773575.

Adding to 30101121 its reverse (12110103), we get a palindrome (42211224).

The spelling of 30101121 in words is "thirty million, one hundred one thousand, one hundred twenty-one".