102102220220004 has 30 divisors (see below), whose sum is σ = 266915371995734. Its totient is φ = 34034073406560.

The previous prime is 102102220220003. The next prime is 102102220220087. The reversal of 102102220220004 is 400022022201201.

102102220220004 is a `hidden beast` number, since 10 + 210 + 2 + 220 + 220 + 0 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 79407667565604 + 22694552654400 = 8911098^2 + 4763880^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102102220220003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 157565154337 + ... + 157565154984.

Almost surely, 2^{102102220220004} is an apocalyptic number.

It is an amenable number.

102102220220004 is an abundant number, since it is smaller than the sum of its proper divisors (164813151775730).

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

102102220220004 is a wasteful number, since it uses less digits than its factorization.

102102220220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315130309337 (or 315130309326 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 102102220220004 its reverse (400022022201201), we get a palindrome (502124242421205).

The spelling of 102102220220004 in words is "one hundred two trillion, one hundred two billion, two hundred twenty million, two hundred twenty thousand, four".