212030021111 has 8 divisors (see below), whose sum is σ = 224527567680. Its totient is φ = 199535273728.

The previous prime is 212030021017. The next prime is 212030021141. The reversal of 212030021111 is 111120030212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212030021111 is a prime.

It is a super-2 number, since 2×212030021111² (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 (212030021141) 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, 542831 + ... + 847776.

It is an arithmetic number, because the mean of its divisors is an integer number (28065945960).

Almost surely, 2^212030021111 is an apocalyptic number.

212030021111 is a deficient number, since it is larger than the sum of its proper divisors (12497546569).

212030021111 is a wasteful number, since it uses less digits than its factorization.

212030021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399593.

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

Adding to 212030021111 its reverse (111120030212), we get a palindrome (323150051323).

The spelling of 212030021111 in words is "two hundred twelve billion, thirty million, twenty-one thousand, one hundred eleven".