40102221 has 8 divisors (see below), whose sum is σ = 53524800. Its totient is φ = 26707232.

The previous prime is 40102213. The next prime is 40102253. The reversal of 40102221 is 12220104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40102221 - 2³ = 40102213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40102197 and 40102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40102721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3225 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (6690600).

Almost surely, 2^40102221 is an apocalyptic number.

It is an amenable number.

40102221 is a deficient number, since it is larger than the sum of its proper divisors (13422579).

40102221 is a wasteful number, since it uses less digits than its factorization.

40102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13795.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 40102221 is about 6332.6314435628. The cubic root of 40102221 is about 342.2862672757.

Adding to 40102221 its reverse (12220104), we get a palindrome (52322325).

The spelling of 40102221 in words is "forty million, one hundred two thousand, two hundred twenty-one".