400102222 has 8 divisors (see below), whose sum is σ = 646319016. Its totient is φ = 184662552.

The previous prime is 400102217. The next prime is 400102243. The reversal of 400102222 is 222201004.

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

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7694248 + ... + 7694299.

It is an arithmetic number, because the mean of its divisors is an integer number (80789877).

Almost surely, 2^400102222 is an apocalyptic number.

400102222 is a deficient number, since it is larger than the sum of its proper divisors (246216794).

400102222 is a wasteful number, since it uses less digits than its factorization.

400102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388562.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 400102222 is about 20002.5553867500. Note that the first 3 decimals coincide. The cubic root of 400102222 is about 736.8690592269.

Adding to 400102222 its reverse (222201004), we get a palindrome (622303226).

The spelling of 400102222 in words is "four hundred million, one hundred two thousand, two hundred twenty-two".