220121122011122 has 4 divisors (see below), whose sum is σ = 330181683016686. Its totient is φ = 110060561005560.

The previous prime is 220121122011113. The next prime is 220121122011143. The reversal of 220121122011122 is 221110221121022.

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

It can be written as a sum of positive squares in only one way, i.e., 192774591780241 + 27346530230881 = 13884329^2 + 5229391^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220121122011094 and 220121122011103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55030280502779 + ... + 55030280502782.

Almost surely, 2^{220121122011122} is an apocalyptic number.

220121122011122 is a deficient number, since it is larger than the sum of its proper divisors (110060561005564).

220121122011122 is a wasteful number, since it uses less digits than its factorization.

220121122011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110060561005563.

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

Adding to 220121122011122 its reverse (221110221121022), we get a palindrome (441231343132144).

The spelling of 220121122011122 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twenty-two million, eleven thousand, one hundred twenty-two".