211212100002 has 16 divisors (see below), whose sum is σ = 422935000992. Its totient is φ = 70318899840.

The previous prime is 211212099997. The next prime is 211212100003. The reversal of 211212100002 is 200001212112.

It is a super-2 number, since 2×211212100002² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212100003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21277999 + ... + 21287922.

It is an arithmetic number, because the mean of its divisors is an integer number (26433437562).

Almost surely, 2^211212100002 is an apocalyptic number.

211212100002 is an abundant number, since it is smaller than the sum of its proper divisors (211722900990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211212100002 is a wasteful number, since it uses less digits than its factorization.

211212100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42566753.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211212100002 its reverse (200001212112), we get a palindrome (411213312114).

The spelling of 211212100002 in words is "two hundred eleven billion, two hundred twelve million, one hundred thousand, two".