111420122040021 has 8 divisors (see below), whose sum is σ = 148561503729120. Its totient is φ = 74279410855472.

The previous prime is 111420122039983. The next prime is 111420122040041. The reversal of 111420122040021 is 120040221024111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111420122040021 - 2⁶ = 111420122039957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111420122040021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111420122040041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167238270 + ... + 167903183.

It is an arithmetic number, because the mean of its divisors is an integer number (18570187966140).

Almost surely, 2^{111420122040021} is an apocalyptic number.

It is an amenable number.

111420122040021 is a deficient number, since it is larger than the sum of its proper divisors (37141381689099).

111420122040021 is a wasteful number, since it uses less digits than its factorization.

111420122040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335252275.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 111420122040021 its reverse (120040221024111), we get a palindrome (231460343064132).

The spelling of 111420122040021 in words is "one hundred eleven trillion, four hundred twenty billion, one hundred twenty-two million, forty thousand, twenty-one".