42101222 has 4 divisors (see below), whose sum is σ = 63151836. Its totient is φ = 21050610.

The previous prime is 42101209. The next prime is 42101249. The reversal of 42101222 is 22210124.

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

It is a junction number, because it is equal to n+sod(n) for n = 42101197 and 42101206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10525304 + ... + 10525307.

It is an arithmetic number, because the mean of its divisors is an integer number (15787959).

Almost surely, 2^42101222 is an apocalyptic number.

42101222 is a deficient number, since it is larger than the sum of its proper divisors (21050614).

42101222 is a wasteful number, since it uses less digits than its factorization.

42101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21050613.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42101222 is about 6488.5454456296. The cubic root of 42101222 is about 347.8816867809.

Adding to 42101222 its reverse (22210124), we get a palindrome (64311346).

It can be divided in two parts, 4210122 and 2, that added together give a palindrome (4210124).

The spelling of 42101222 in words is "forty-two million, one hundred one thousand, two hundred twenty-two".