2891212202001 has 16 divisors (see below), whose sum is σ = 3864560025600. Its totient is φ = 1922670043008.

The previous prime is 2891212201993. The next prime is 2891212202003. The reversal of 2891212202001 is 1002022121982.

It is not a de Polignac number, because 2891212202001 - 2³ = 2891212201993 is a prime.

It is a super-3 number, since 3×2891212202001³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2891212202001.

It is not an unprimeable number, because it can be changed into a prime (2891212202003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33880255 + ... + 33965483.

It is an arithmetic number, because the mean of its divisors is an integer number (241535001600).

Almost surely, 2^{2891212202001} is an apocalyptic number.

It is an amenable number.

2891212202001 is a deficient number, since it is larger than the sum of its proper divisors (973347823599).

2891212202001 is a wasteful number, since it uses less digits than its factorization.

2891212202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113288.

The product of its (nonzero) digits is 2304, while the sum is 30.

Adding to 2891212202001 its reverse (1002022121982), we get a palindrome (3893234323983).

The spelling of 2891212202001 in words is "two trillion, eight hundred ninety-one billion, two hundred twelve million, two hundred two thousand, one".