111203130023021 has 16 divisors (see below), whose sum is σ = 117742411952640. Its totient is φ = 104854158407040.

The previous prime is 111203130023003. The next prime is 111203130023071. The reversal of 111203130023021 is 120320031302111.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111203130023021 is a prime.

It is a super-2 number, since 2×111203130023021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111203130022984 and 111203130023002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203130023071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88640825 + ... + 89886606.

It is an arithmetic number, because the mean of its divisors is an integer number (7358900747040).

Almost surely, 2^{111203130023021} is an apocalyptic number.

It is an amenable number.

111203130023021 is a deficient number, since it is larger than the sum of its proper divisors (6539281929619).

111203130023021 is a wasteful number, since it uses less digits than its factorization.

111203130023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178527964.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111203130023021 its reverse (120320031302111), we get a palindrome (231523161325132).

The spelling of 111203130023021 in words is "one hundred eleven trillion, two hundred three billion, one hundred thirty million, twenty-three thousand, twenty-one".