221121213123132 has 96 divisors (see below), whose sum is σ = 689656805107200. Its totient is φ = 59852358435456.

The previous prime is 221121213122981. The next prime is 221121213123197. The reversal of 221121213123132 is 231321312121122.

221121213123132 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 212 + 1 + 312 + 3 + 132 = 666.

221121213123132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 221121213123096 and 221121213123105.

It is a congruent number.

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, 7697048193 + ... + 7697076920.

It is an arithmetic number, because the mean of its divisors is an integer number (7183925053200).

Almost surely, 2^{221121213123132} is an apocalyptic number.

It is an amenable number.

221121213123132 is an abundant number, since it is smaller than the sum of its proper divisors (468535591984068).

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

221121213123132 is a wasteful number, since it uses less digits than its factorization.

221121213123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394125152 (or 15394125144 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 221121213123132 its reverse (231321312121122), we get a palindrome (452442525244254).

The spelling of 221121213123132 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred twenty-three thousand, one hundred thirty-two".