220121112202102 has 4 divisors (see below), whose sum is σ = 330181668303156. Its totient is φ = 110060556101050.

The previous prime is 220121112202097. The next prime is 220121112202133. The reversal of 220121112202102 is 201202211121022.

220121112202102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 220121112202102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55030278050524 + ... + 55030278050527.

It is an arithmetic number, because the mean of its divisors is an integer number (82545417075789).

Almost surely, 2^{220121112202102} is an apocalyptic number.

220121112202102 is a deficient number, since it is larger than the sum of its proper divisors (110060556101054).

220121112202102 is a wasteful number, since it uses less digits than its factorization.

220121112202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110060556101053.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220121112202102 its reverse (201202211121022), we get a palindrome (421323323323124).

The spelling of 220121112202102 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred two".