221210404012102 has 4 divisors (see below), whose sum is σ = 331815606018156. Its totient is φ = 110605202006050.

The previous prime is 221210404012093. The next prime is 221210404012121. The reversal of 221210404012102 is 201210404012122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55302601003024 + ... + 55302601003027.

It is an arithmetic number, because the mean of its divisors is an integer number (82953901504539).

Almost surely, 2^{221210404012102} is an apocalyptic number.

221210404012102 is a deficient number, since it is larger than the sum of its proper divisors (110605202006054).

221210404012102 is a wasteful number, since it uses less digits than its factorization.

221210404012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110605202006053.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221210404012102 its reverse (201210404012122), we get a palindrome (422420808024224).

The spelling of 221210404012102 in words is "two hundred twenty-one trillion, two hundred ten billion, four hundred four million, twelve thousand, one hundred two".