111402020121001 has 2 divisors, whose sum is σ = 111402020121002. Its totient is φ = 111402020121000.

The previous prime is 111402020120999. The next prime is 111402020121013. The reversal of 111402020121001 is 100121020204111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109554320912400 + 1847699208601 = 10466820^2 + 1359301^2 .

It is a cyclic number.

It is not a de Polignac number, because 111402020121001 - 2¹ = 111402020120999 is a prime.

Together with 111402020120999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111402020121901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55701010060500 + 55701010060501.

It is an arithmetic number, because the mean of its divisors is an integer number (55701010060501).

Almost surely, 2^{111402020121001} is an apocalyptic number.

It is an amenable number.

111402020121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111402020121001 is an equidigital number, since it uses as much as digits as its factorization.

111402020121001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111402020121001 its reverse (100121020204111), we get a palindrome (211523040325112).

The spelling of 111402020121001 in words is "one hundred eleven trillion, four hundred two billion, twenty million, one hundred twenty-one thousand, one".