111021002102001 has 32 divisors (see below), whose sum is σ = 155353134867840. Its totient is φ = 70454934950400.

The previous prime is 111021002101991. The next prime is 111021002102011. The reversal of 111021002102001 is 100201200120111.

It is an interprime number because it is at equal distance from previous prime (111021002101991) and next prime (111021002102011).

It is not a de Polignac number, because 111021002102001 - 2¹⁸ = 111021001839857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111021002102011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45865291 + ... + 48225168.

It is an arithmetic number, because the mean of its divisors is an integer number (4854785464620).

Almost surely, 2^{111021002102001} is an apocalyptic number.

It is an amenable number.

111021002102001 is a deficient number, since it is larger than the sum of its proper divisors (44332132765839).

111021002102001 is a wasteful number, since it uses less digits than its factorization.

111021002102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94090737.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111021002102001 its reverse (100201200120111), we get a palindrome (211222202222112).

The spelling of 111021002102001 in words is "one hundred eleven trillion, twenty-one billion, two million, one hundred two thousand, one".