30122121101 has 4 divisors (see below), whose sum is σ = 30172917852. Its totient is φ = 30071324352.

The previous prime is 30122121091. The next prime is 30122121103. The reversal of 30122121101 is 10112122103.

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 8136942025 + 21985179076 = 90205^2 + 148274^2 .

It is a cyclic number.

It is not a de Polignac number, because 30122121101 - 2¹⁴ = 30122104717 is a prime.

It is a super-4 number, since 4×30122121101⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30122121103) 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, 25397486 + ... + 25398671.

It is an arithmetic number, because the mean of its divisors is an integer number (7543229463).

Almost surely, 2^30122121101 is an apocalyptic number.

It is an amenable number.

30122121101 is a deficient number, since it is larger than the sum of its proper divisors (50796751).

30122121101 is an equidigital number, since it uses as much as digits as its factorization.

30122121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50796750.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 30122121101 its reverse (10112122103), we get a palindrome (40234243204).

The spelling of 30122121101 in words is "thirty billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred one".