2102122221002 has 32 divisors (see below), whose sum is σ = 3303518342400. Its totient is φ = 1001876436288.

The previous prime is 2102122220987. The next prime is 2102122221007. The reversal of 2102122221002 is 2001222212012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2102122221007) 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 in 15 ways as a sum of consecutive naturals, for example, 80506433 + ... + 80532539.

It is an arithmetic number, because the mean of its divisors is an integer number (103234948200).

Almost surely, 2^{2102122221002} is an apocalyptic number.

2102122221002 is a deficient number, since it is larger than the sum of its proper divisors (1201396121398).

2102122221002 is a wasteful number, since it uses less digits than its factorization.

2102122221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43790.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2102122221002 its reverse (2001222212012), we get a palindrome (4103344433014).

The spelling of 2102122221002 in words is "two trillion, one hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, two".