221210102011004 has 6 divisors (see below), whose sum is σ = 387117678519264. Its totient is φ = 110605051005500.

The previous prime is 221210102011001. The next prime is 221210102011013. The reversal of 221210102011004 is 400110201012122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210102011001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27651262751372 + ... + 27651262751379.

It is an arithmetic number, because the mean of its divisors is an integer number (64519613086544).

Almost surely, 2^{221210102011004} is an apocalyptic number.

It is an amenable number.

221210102011004 is a deficient number, since it is larger than the sum of its proper divisors (165907576508260).

221210102011004 is a wasteful number, since it uses less digits than its factorization.

221210102011004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55302525502755 (or 55302525502753 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221210102011004 its reverse (400110201012122), we get a palindrome (621320303023126).

The spelling of 221210102011004 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred two million, eleven thousand, four".