221212132141 has 24 divisors (see below), whose sum is σ = 302315890464. Its totient is φ = 159113616480.

The previous prime is 221212132133. The next prime is 221212132157. The reversal of 221212132141 is 141231212122.

It is not a de Polignac number, because 221212132141 - 2³ = 221212132133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212132111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15778075 + ... + 15792088.

It is an arithmetic number, because the mean of its divisors is an integer number (12596495436).

Almost surely, 2^221212132141 is an apocalyptic number.

It is an amenable number.

221212132141 is a deficient number, since it is larger than the sum of its proper divisors (81103758323).

221212132141 is a wasteful number, since it uses less digits than its factorization.

221212132141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31570201 (or 31570194 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

Adding to 221212132141 its reverse (141231212122), we get a palindrome (362443344263).

It can be divided in two parts, 221212 and 132141, that added together give a palindrome (353353).

The spelling of 221212132141 in words is "two hundred twenty-one billion, two hundred twelve million, one hundred thirty-two thousand, one hundred forty-one".