30021200011111 has 4 divisors (see below), whose sum is σ = 30132802985400. Its totient is φ = 29909597036824.

The previous prime is 30021200011109. The next prime is 30021200011151. The reversal of 30021200011111 is 11111000212003.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30021200011111 - 2¹ = 30021200011109 is a prime.

It is a super-2 number, since 2×30021200011111² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021200011091 and 30021200011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021200011151) 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, 55801486741 + ... + 55801487278.

It is an arithmetic number, because the mean of its divisors is an integer number (7533200746350).

Almost surely, 2^{30021200011111} is an apocalyptic number.

30021200011111 is a deficient number, since it is larger than the sum of its proper divisors (111602974289).

30021200011111 is a wasteful number, since it uses less digits than its factorization.

30021200011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111602974288.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 30021200011111 its reverse (11111000212003), we get a palindrome (41132200223114).

The spelling of 30021200011111 in words is "thirty trillion, twenty-one billion, two hundred million, eleven thousand, one hundred eleven".