4001022212002 has 4 divisors (see below), whose sum is σ = 6001533318006. Its totient is φ = 2000511106000.

The previous prime is 4001022211957. The next prime is 4001022212003. The reversal of 4001022212002 is 2002122201004.

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., 3958392764041 + 42629447961 = 1989571^2 + 206469^2 .

It is not an unprimeable number, because it can be changed into a prime (4001022212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000255552999 + ... + 1000255553002.

Almost surely, 2^{4001022212002} is an apocalyptic number.

4001022212002 is a deficient number, since it is larger than the sum of its proper divisors (2000511106004).

4001022212002 is a wasteful number, since it uses less digits than its factorization.

4001022212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000511106003.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 4001022212002 its reverse (2002122201004), we get a palindrome (6003144413006).

The spelling of 4001022212002 in words is "four trillion, one billion, twenty-two million, two hundred twelve thousand, two".