30120021101 has 16 divisors (see below), whose sum is σ = 31587523968. Its totient is φ = 28688083200.

The previous prime is 30120021097. The next prime is 30120021119. The reversal of 30120021101 is 10112002103.

It is a cyclic number.

It is not a de Polignac number, because 30120021101 - 2² = 30120021097 is a prime.

It is a super-2 number, since 2×30120021101² (a number of 22 digits) contains 22 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 (30120021161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6780041 + ... + 6784481.

It is an arithmetic number, because the mean of its divisors is an integer number (1974220248).

Almost surely, 2^30120021101 is an apocalyptic number.

It is an amenable number.

30120021101 is a deficient number, since it is larger than the sum of its proper divisors (1467502867).

30120021101 is a wasteful number, since it uses less digits than its factorization.

30120021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372.

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

Adding to 30120021101 its reverse (10112002103), we get a palindrome (40232023204).

It can be divided in two parts, 3012002 and 1101, that added together give a palindrome (3013103).

The spelling of 30120021101 in words is "thirty billion, one hundred twenty million, twenty-one thousand, one hundred one".