211220310203 has 16 divisors (see below), whose sum is σ = 249061370880. Its totient is φ = 175359470400.

The previous prime is 211220310179. The next prime is 211220310209. The reversal of 211220310203 is 302013022112.

It is a cyclic number.

It is not a de Polignac number, because 211220310203 - 2¹⁴ = 211220293819 is a prime.

It is a super-2 number, since 2×211220310203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211220310209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2607443 + ... + 2687228.

It is an arithmetic number, because the mean of its divisors is an integer number (15566335680).

Almost surely, 2^211220310203 is an apocalyptic number.

211220310203 is a deficient number, since it is larger than the sum of its proper divisors (37841060677).

211220310203 is a wasteful number, since it uses less digits than its factorization.

211220310203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294858.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211220310203 its reverse (302013022112), we get a palindrome (513233332315).

The spelling of 211220310203 in words is "two hundred eleven billion, two hundred twenty million, three hundred ten thousand, two hundred three".