421205383502122 has 4 divisors (see below), whose sum is σ = 631808075253186. Its totient is φ = 210602691751060.

The previous prime is 421205383502063. The next prime is 421205383502171. The reversal of 421205383502122 is 221205383502124.

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., 397777934585641 + 23427448916481 = 19944371^2 + 4840191^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105301345875529 + ... + 105301345875532.

Almost surely, 2^{421205383502122} is an apocalyptic number.

421205383502122 is a deficient number, since it is larger than the sum of its proper divisors (210602691751064).

421205383502122 is a wasteful number, since it uses less digits than its factorization.

421205383502122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210602691751063.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 421205383502122 in words is "four hundred twenty-one trillion, two hundred five billion, three hundred eighty-three million, five hundred two thousand, one hundred twenty-two".