400221202102 has 32 divisors (see below), whose sum is σ = 624566752992. Its totient is φ = 192177183744.

The previous prime is 400221202097. The next prime is 400221202109. The reversal of 400221202102 is 201202122004.

It is a super-2 number, since 2×400221202102² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400221202109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6683398 + ... + 6743014.

It is an arithmetic number, because the mean of its divisors is an integer number (19517711031).

Almost surely, 2^400221202102 is an apocalyptic number.

400221202102 is a deficient number, since it is larger than the sum of its proper divisors (224345550890).

400221202102 is a wasteful number, since it uses less digits than its factorization.

400221202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60832.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 400221202102 its reverse (201202122004), we get a palindrome (601423324106).

The spelling of 400221202102 in words is "four hundred billion, two hundred twenty-one million, two hundred two thousand, one hundred two".