2891011221002 has 8 divisors (see below), whose sum is σ = 4388764022496. Its totient is φ = 1428089880172.

The previous prime is 2891011221001. The next prime is 2891011221107. The reversal of 2891011221002 is 2001221101982.

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 (2891011221001) 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, 8707864958 + ... + 8707865289.

It is an arithmetic number, because the mean of its divisors is an integer number (548595502812).

Almost surely, 2^{2891011221002} is an apocalyptic number.

2891011221002 is a deficient number, since it is larger than the sum of its proper divisors (1497752801494).

2891011221002 is a wasteful number, since it uses less digits than its factorization.

2891011221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17415730332.

The product of its (nonzero) digits is 1152, while the sum is 29.

Adding to 2891011221002 its reverse (2001221101982), we get a palindrome (4892232322984).

The spelling of 2891011221002 in words is "two trillion, eight hundred ninety-one billion, eleven million, two hundred twenty-one thousand, two".