221121122120102 has 8 divisors (see below), whose sum is σ = 331682621547816. Its totient is φ = 110560248270832.

The previous prime is 221121122120051. The next prime is 221121122120113. The reversal of 221121122120102 is 201021221121122.

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, 155509943 + ... + 156925410.

It is an arithmetic number, because the mean of its divisors is an integer number (41460327693477).

Almost surely, 2^{221121122120102} is an apocalyptic number.

221121122120102 is a deficient number, since it is larger than the sum of its proper divisors (110561499427714).

221121122120102 is a wasteful number, since it uses less digits than its factorization.

221121122120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312789222.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221121122120102 its reverse (201021221121122), we get a palindrome (422142343241224).

The spelling of 221121122120102 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred two".