221011012011122 has 4 divisors (see below), whose sum is σ = 331516518016686. Its totient is φ = 110505506005560.

The previous prime is 221011012011109. The next prime is 221011012011149. The reversal of 221011012011122 is 221110210110122.

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., 220117251649801 + 893760361321 = 14836349^2 + 945389^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221011012011122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55252753002779 + ... + 55252753002782.

Almost surely, 2^{221011012011122} is an apocalyptic number.

221011012011122 is a deficient number, since it is larger than the sum of its proper divisors (110505506005564).

221011012011122 is a wasteful number, since it uses less digits than its factorization.

221011012011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110505506005563.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221011012011122 its reverse (221110210110122), we get a palindrome (442121222121244).

The spelling of 221011012011122 in words is "two hundred twenty-one trillion, eleven billion, twelve million, eleven thousand, one hundred twenty-two".