2102112221002 has 8 divisors (see below), whose sum is σ = 3204859615812. Its totient is φ = 1033825682400.

The previous prime is 2102112220997. The next prime is 2102112221009. The reversal of 2102112221002 is 2001222112012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2100618321201 + 1493899801 = 1449351^2 + 38651^2 .

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

It is a super-2 number, since 2×2102112221002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102112221009) 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, 8615213899 + ... + 8615214142.

Almost surely, 2^{2102112221002} is an apocalyptic number.

2102112221002 is a deficient number, since it is larger than the sum of its proper divisors (1102747394810).

2102112221002 is a wasteful number, since it uses less digits than its factorization.

2102112221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17230428104.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102112221002 its reverse (2001222112012), we get a palindrome (4103334333014).

The spelling of 2102112221002 in words is "two trillion, one hundred two billion, one hundred twelve million, two hundred twenty-one thousand, two".