211220300111 has 8 divisors (see below), whose sum is σ = 213609765600. Its totient is φ = 208831194880.

The previous prime is 211220300101. The next prime is 211220300189. The reversal of 211220300111 is 111003022112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211220300111 - 2²⁶ = 211153191247 is a prime.

It is a super-2 number, since 2×211220300111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220300101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191710 + ... + 1357428.

It is an arithmetic number, because the mean of its divisors is an integer number (26701220700).

Almost surely, 2^211220300111 is an apocalyptic number.

211220300111 is a deficient number, since it is larger than the sum of its proper divisors (2389465489).

211220300111 is a wasteful number, since it uses less digits than its factorization.

211220300111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180129.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211220300111 its reverse (111003022112), we get a palindrome (322223322223).

The spelling of 211220300111 in words is "two hundred eleven billion, two hundred twenty million, three hundred thousand, one hundred eleven".