211221230132 has 24 divisors (see below), whose sum is σ = 403255554240. Its totient is φ = 96006072960.

The previous prime is 211221230117. The next prime is 211221230141. The reversal of 211221230132 is 231032122112.

It is a super-2 number, since 2×211221230132² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374044 + ... + 1520012.

It is an arithmetic number, because the mean of its divisors is an integer number (16802314760).

Almost surely, 2^211221230132 is an apocalyptic number.

211221230132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211221230132 is a deficient number, since it is larger than the sum of its proper divisors (192034324108).

211221230132 is a wasteful number, since it uses less digits than its factorization.

211221230132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178871 (or 178869 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211221230132 its reverse (231032122112), we get a palindrome (442253352244).

The spelling of 211221230132 in words is "two hundred eleven billion, two hundred twenty-one million, two hundred thirty thousand, one hundred thirty-two".