221121101122 has 4 divisors (see below), whose sum is σ = 331681651686. Its totient is φ = 110560550560.

The previous prime is 221121101119. The next prime is 221121101189. The reversal of 221121101122 is 221101121122.

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., 133947948121 + 87173153001 = 365989^2 + 295251^2 .

It is a super-2 number, since 2×221121101122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221121101096 and 221121101105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55280275279 + ... + 55280275282.

Almost surely, 2^221121101122 is an apocalyptic number.

221121101122 is a deficient number, since it is larger than the sum of its proper divisors (110560550564).

221121101122 is a wasteful number, since it uses less digits than its factorization.

221121101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110560550563.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221121101122 its reverse (221101121122), we get a palindrome (442222222244).

The spelling of 221121101122 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty-two".