211213102321 has 16 divisors (see below), whose sum is σ = 236485847808. Its totient is φ = 187371676800.

The previous prime is 211213102319. The next prime is 211213102339. The reversal of 211213102321 is 123201312112.

It is a cyclic number.

It is not a de Polignac number, because 211213102321 - 2¹ = 211213102319 is a prime.

It is a super-2 number, since 2×211213102321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211213102301) 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 15 ways as a sum of consecutive naturals, for example, 2921545 + ... + 2992966.

It is an arithmetic number, because the mean of its divisors is an integer number (14780365488).

Almost surely, 2^211213102321 is an apocalyptic number.

It is an amenable number.

211213102321 is a deficient number, since it is larger than the sum of its proper divisors (25272745487).

211213102321 is a wasteful number, since it uses less digits than its factorization.

211213102321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5914632.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211213102321 its reverse (123201312112), we get a palindrome (334414414433).

The spelling of 211213102321 in words is "two hundred eleven billion, two hundred thirteen million, one hundred two thousand, three hundred twenty-one".