7890221121002 has 8 divisors (see below), whose sum is σ = 12911270925312. Its totient is φ = 3586464145900.

The previous prime is 7890221121001. The next prime is 7890221121061. The reversal of 7890221121002 is 2001211220987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7890221121001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179323207274 + ... + 179323207317.

It is an arithmetic number, because the mean of its divisors is an integer number (1613908865664).

Almost surely, 2^{7890221121002} is an apocalyptic number.

7890221121002 is a deficient number, since it is larger than the sum of its proper divisors (5021049804310).

7890221121002 is a wasteful number, since it uses less digits than its factorization.

7890221121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358646414604.

The product of its (nonzero) digits is 8064, while the sum is 35.

Adding to 7890221121002 its reverse (2001211220987), we get a palindrome (9891432341989).

The spelling of 7890221121002 in words is "seven trillion, eight hundred ninety billion, two hundred twenty-one million, one hundred twenty-one thousand, two".