30440022121 has 4 divisors (see below), whose sum is σ = 30441962452. Its totient is φ = 30438081792.

The previous prime is 30440022101. The next prime is 30440022131. The reversal of 30440022121 is 12122004403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17706028096 + 12733994025 = 133064^2 + 112845^2 .

It is a cyclic number.

It is not a de Polignac number, because 30440022121 - 2¹⁹ = 30439497833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30440022101) 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, 946440 + ... + 978073.

It is an arithmetic number, because the mean of its divisors is an integer number (7610490613).

Almost surely, 2^30440022121 is an apocalyptic number.

It is an amenable number.

30440022121 is a deficient number, since it is larger than the sum of its proper divisors (1940331).

30440022121 is a wasteful number, since it uses less digits than its factorization.

30440022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940330.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 30440022121 its reverse (12122004403), we get a palindrome (42562026524).

The spelling of 30440022121 in words is "thirty billion, four hundred forty million, twenty-two thousand, one hundred twenty-one".