221212100012002 has 32 divisors (see below), whose sum is σ = 366056514921600. Its totient is φ = 99419579952000.

The previous prime is 221212100011951. The next prime is 221212100012041. The reversal of 221212100012002 is 200210001212122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126241252 + ... + 127981552.

It is an arithmetic number, because the mean of its divisors is an integer number (11439266091300).

Almost surely, 2^{221212100012002} is an apocalyptic number.

221212100012002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221212100012002 is a deficient number, since it is larger than the sum of its proper divisors (144844414909598).

221212100012002 is a wasteful number, since it uses less digits than its factorization.

221212100012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805322.

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

Adding to 221212100012002 its reverse (200210001212122), we get a palindrome (421422101224124).

The spelling of 221212100012002 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred million, twelve thousand, two".