221021120021102 has 8 divisors (see below), whose sum is σ = 331531750928136. Its totient is φ = 110510536378392.

The previous prime is 221021120021089. The next prime is 221021120021123. The reversal of 221021120021102 is 201120021120122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235888 + ... + 21447260.

It is an arithmetic number, because the mean of its divisors is an integer number (41441468866017).

Almost surely, 2^{221021120021102} is an apocalyptic number.

221021120021102 is a deficient number, since it is larger than the sum of its proper divisors (110510630907034).

221021120021102 is a wasteful number, since it uses less digits than its factorization.

221021120021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23632162.

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

Adding to 221021120021102 its reverse (201120021120122), we get a palindrome (422141141141224).

The spelling of 221021120021102 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty million, twenty-one thousand, one hundred two".