22011121004 has 6 divisors (see below), whose sum is σ = 38519461764. Its totient is φ = 11005560500.

The previous prime is 22011121001. The next prime is 22011121043. The reversal of 22011121004 is 40012111022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22011121004.

It is not an unprimeable number, because it can be changed into a prime (22011121001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751390122 + ... + 2751390129.

It is an arithmetic number, because the mean of its divisors is an integer number (6419910294).

Almost surely, 2^22011121004 is an apocalyptic number.

It is an amenable number.

22011121004 is a deficient number, since it is larger than the sum of its proper divisors (16508340760).

22011121004 is a wasteful number, since it uses less digits than its factorization.

22011121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502780255 (or 5502780253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22011121004 its reverse (40012111022), we get a palindrome (62023232026).

The spelling of 22011121004 in words is "twenty-two billion, eleven million, one hundred twenty-one thousand, four".