400220024002 has 4 divisors (see below), whose sum is σ = 600330036006. Its totient is φ = 200110012000.

The previous prime is 400220023999. The next prime is 400220024051. The reversal of 400220024002 is 200420022004.

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

It can be written as a sum of positive squares in only one way, i.e., 370380570921 + 29839453081 = 608589^2 + 172741^2 .

It is a super-2 number, since 2×400220024002² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055005999 + ... + 100055006002.

Almost surely, 2^400220024002 is an apocalyptic number.

400220024002 is a deficient number, since it is larger than the sum of its proper divisors (200110012004).

400220024002 is a wasteful number, since it uses less digits than its factorization.

400220024002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200110012003.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 400220024002 its reverse (200420022004), we get a palindrome (600640046006).

The spelling of 400220024002 in words is "four hundred billion, two hundred twenty million, twenty-four thousand, two".