11121222121002 has 48 divisors (see below), whose sum is σ = 27658518800640. Its totient is φ = 3163616515296.

The previous prime is 11121222120997. The next prime is 11121222121021. The reversal of 11121222121002 is 20012122212111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192686578 + ... + 192744285.

It is an arithmetic number, because the mean of its divisors is an integer number (576219141680).

Almost surely, 2^{11121222121002} is an apocalyptic number.

11121222121002 is an abundant number, since it is smaller than the sum of its proper divisors (16537296679638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121222121002 is a wasteful number, since it uses less digits than its factorization.

11121222121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385431107 (or 385431104 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11121222121002 its reverse (20012122212111), we get a palindrome (31133344333113).

The spelling of 11121222121002 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two".