205221214141442 has 4 divisors (see below), whose sum is σ = 307831821212166. Its totient is φ = 102610607070720.

The previous prime is 205221214141409. The next prime is 205221214141483. The reversal of 205221214141442 is 244141412122502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 203311923045001 + 1909291096441 = 14258749^2 + 1381771^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51305303535359 + ... + 51305303535362.

Almost surely, 2^{205221214141442} is an apocalyptic number.

205221214141442 is a deficient number, since it is larger than the sum of its proper divisors (102610607070724).

205221214141442 is a wasteful number, since it uses less digits than its factorization.

205221214141442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102610607070723.

The product of its (nonzero) digits is 40960, while the sum is 35.

Adding to 205221214141442 its reverse (244141412122502), we get a palindrome (449362626263944).

The spelling of 205221214141442 in words is "two hundred five trillion, two hundred twenty-one billion, two hundred fourteen million, one hundred forty-one thousand, four hundred forty-two".