40121222 has 4 divisors (see below), whose sum is σ = 60181836. Its totient is φ = 20060610.

The previous prime is 40121219. The next prime is 40121231. The reversal of 40121222 is 22212104.

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 = 40121197 and 40121206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030304 + ... + 10030307.

It is an arithmetic number, because the mean of its divisors is an integer number (15045459).

Almost surely, 2^40121222 is an apocalyptic number.

40121222 is a deficient number, since it is larger than the sum of its proper divisors (20060614).

40121222 is a wasteful number, since it uses less digits than its factorization.

40121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060613.

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

The square root of 40121222 is about 6334.1315111071. The cubic root of 40121222 is about 342.3403187661.

Adding to 40121222 its reverse (22212104), we get a palindrome (62333326).

The spelling of 40121222 in words is "forty million, one hundred twenty-one thousand, two hundred twenty-two".