211223023330 has 64 divisors (see below), whose sum is σ = 435041964288. Its totient is φ = 73088040960.

The previous prime is 211223023229. The next prime is 211223023409. The reversal of 211223023330 is 33320322112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272002 + ... + 704578.

It is an arithmetic number, because the mean of its divisors is an integer number (6797530692).

Almost surely, 2^211223023330 is an apocalyptic number.

211223023330 is an abundant number, since it is smaller than the sum of its proper divisors (223818940958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211223023330 is a wasteful number, since it uses less digits than its factorization.

211223023330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432811.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 211223023330 its reverse (33320322112), we get a palindrome (244543345442).

The spelling of 211223023330 in words is "two hundred eleven billion, two hundred twenty-three million, twenty-three thousand, three hundred thirty".