2112221221210 has 64 divisors (see below), whose sum is σ = 4207486228992. Its totient is φ = 759382091776.

The previous prime is 2112221221153. The next prime is 2112221221211. The reversal of 2112221221210 is 121221222112.

It is a super-2 number, since 2×2112221221210² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112221221211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1974699 + ... + 2850241.

It is an arithmetic number, because the mean of its divisors is an integer number (65741972328).

Almost surely, 2^{2112221221210} is an apocalyptic number.

2112221221210 is a deficient number, since it is larger than the sum of its proper divisors (2095265007782).

2112221221210 is a wasteful number, since it uses less digits than its factorization.

2112221221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876207.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2112221221210 its reverse (121221222112), we get a palindrome (2233442443322).

The spelling of 2112221221210 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".