2221012102 has 4 divisors (see below), whose sum is σ = 3331518156. Its totient is φ = 1110506050.

The previous prime is 2221012097. The next prime is 2221012103. The reversal of 2221012102 is 2012101222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221012103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555253024 + ... + 555253027.

It is an arithmetic number, because the mean of its divisors is an integer number (832879539).

Almost surely, 2^2221012102 is an apocalyptic number.

2221012102 is a deficient number, since it is larger than the sum of its proper divisors (1110506054).

2221012102 is a wasteful number, since it uses less digits than its factorization.

2221012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110506053.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2221012102 is about 47127.6150680257. The cubic root of 2221012102 is about 1304.7189643549.

Adding to 2221012102 its reverse (2012101222), we get a palindrome (4233113324).

The spelling of 2221012102 in words is "two billion, two hundred twenty-one million, twelve thousand, one hundred two".