211212121121002 has 16 divisors (see below), whose sum is σ = 322389727420320. Its totient is φ = 103751120270448.

The previous prime is 211212121120993. The next prime is 211212121121039. The reversal of 211212121121002 is 200121121212112.

It is a happy number.

It is a super-2 number, since 2×211212121121002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560216448 + ... + 560593339.

It is an arithmetic number, because the mean of its divisors is an integer number (20149357963770).

Almost surely, 2^{211212121121002} is an apocalyptic number.

211212121121002 is a deficient number, since it is larger than the sum of its proper divisors (111177606299318).

211212121121002 is a wasteful number, since it uses less digits than its factorization.

211212121121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120811445.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211212121121002 its reverse (200121121212112), we get a palindrome (411333242333114).

The spelling of 211212121121002 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, two".