212420410044442 has 4 divisors (see below), whose sum is σ = 318630615066666. Its totient is φ = 106210205022220.

The previous prime is 212420410044439. The next prime is 212420410044461. The reversal of 212420410044442 is 244440014024212.

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., 197179982642241 + 15240427402201 = 14042079^2 + 3903899^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212420410044398 and 212420410044407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53105102511109 + ... + 53105102511112.

Almost surely, 2^{212420410044442} is an apocalyptic number.

212420410044442 is a deficient number, since it is larger than the sum of its proper divisors (106210205022224).

212420410044442 is a wasteful number, since it uses less digits than its factorization.

212420410044442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106210205022223.

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 212420410044442 its reverse (244440014024212), we get a palindrome (456860424068654).

The spelling of 212420410044442 in words is "two hundred twelve trillion, four hundred twenty billion, four hundred ten million, forty-four thousand, four hundred forty-two".