102011021018 has 32 divisors (see below), whose sum is σ = 159036647616. Its totient is φ = 49040466048.

The previous prime is 102011021017. The next prime is 102011021023. The reversal of 102011021018 is 810120110201.

It is a junction number, because it is equal to n+sod(n) for n = 102011020987 and 102011021005.

It is not an unprimeable number, because it can be changed into a prime (102011021011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1951430 + ... + 2003022.

It is an arithmetic number, because the mean of its divisors is an integer number (4969895238).

Almost surely, 2^102011021018 is an apocalyptic number.

102011021018 is a deficient number, since it is larger than the sum of its proper divisors (57025626598).

102011021018 is a wasteful number, since it uses less digits than its factorization.

102011021018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51998.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102011021018 its reverse (810120110201), we get a palindrome (912131131219).

The spelling of 102011021018 in words is "one hundred two billion, eleven million, twenty-one thousand, eighteen".