111102121021002 has 16 divisors (see below), whose sum is σ = 222656796512352. Its totient is φ = 36958614595280.

The previous prime is 111102121020997. The next prime is 111102121021007. The reversal of 111102121021002 is 200120121201111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111102121020997) and next prime (111102121021007).

It is not an unprimeable number, because it can be changed into a prime (111102121021007) 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, 18856433073 + ... + 18856438964.

It is an arithmetic number, because the mean of its divisors is an integer number (13916049782022).

Almost surely, 2^{111102121021002} is an apocalyptic number.

111102121021002 is an abundant number, since it is smaller than the sum of its proper divisors (111554675491350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111102121021002 is a wasteful number, since it uses less digits than its factorization.

111102121021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37712872533.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111102121021002 its reverse (200120121201111), we get a palindrome (311222242222113).

The spelling of 111102121021002 in words is "one hundred eleven trillion, one hundred two billion, one hundred twenty-one million, twenty-one thousand, two".