30210021101 has 4 divisors (see below), whose sum is σ = 32533868892. Its totient is φ = 27886173312.

The previous prime is 30210021077. The next prime is 30210021157. The reversal of 30210021101 is 10112001203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10112001203 = 1087 ⋅9302669.

It can be written as a sum of positive squares in 2 ways, for example, as 2178555625 + 28031465476 = 46675^2 + 167426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30210021101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30210021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161923876 + ... + 1161923901.

It is an arithmetic number, because the mean of its divisors is an integer number (8133467223).

Almost surely, 2^30210021101 is an apocalyptic number.

It is an amenable number.

30210021101 is a deficient number, since it is larger than the sum of its proper divisors (2323847791).

30210021101 is a wasteful number, since it uses less digits than its factorization.

30210021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323847790.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 30210021101 its reverse (10112001203), we get a palindrome (40322022304).

The spelling of 30210021101 in words is "thirty billion, two hundred ten million, twenty-one thousand, one hundred one".