30100023221 has 4 divisors (see below), whose sum is σ = 31070991744. Its totient is φ = 29129054700.

The previous prime is 30100023211. The next prime is 30100023229. The reversal of 30100023221 is 12232000103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12232000103 = 29 ⋅421793107.

It is a cyclic number.

It is not a de Polignac number, because 30100023221 - 2³⁰ = 29026281397 is a prime.

It is a super-3 number, since 3×30100023221³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30100023196 and 30100023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30100023229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485484215 + ... + 485484276.

It is an arithmetic number, because the mean of its divisors is an integer number (7767747936).

Almost surely, 2^30100023221 is an apocalyptic number.

30100023221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30100023221 is a deficient number, since it is larger than the sum of its proper divisors (970968523).

30100023221 is an equidigital number, since it uses as much as digits as its factorization.

30100023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970968522.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30100023221 its reverse (12232000103), we get a palindrome (42332023324).

The spelling of 30100023221 in words is "thirty billion, one hundred million, twenty-three thousand, two hundred twenty-one".