211221523203132 has 96 divisors (see below), whose sum is σ = 554500183970880. Its totient is φ = 62128871884800.

The previous prime is 211221523203079. The next prime is 211221523203133. The reversal of 211221523203132 is 231302325122112.

It is a super-2 number, since 2×211221523203132² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211221523203132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221523203133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230677273 + ... + 231591120.

It is an arithmetic number, because the mean of its divisors is an integer number (5776043583030).

Almost surely, 2^{211221523203132} is an apocalyptic number.

It is an amenable number.

211221523203132 is an abundant number, since it is smaller than the sum of its proper divisors (343278660767748).

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

211221523203132 is a wasteful number, since it uses less digits than its factorization.

211221523203132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462268543 (or 462268541 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 211221523203132 its reverse (231302325122112), we get a palindrome (442523848325244).

The spelling of 211221523203132 in words is "two hundred eleven trillion, two hundred twenty-one billion, five hundred twenty-three million, two hundred three thousand, one hundred thirty-two".