400212421003 has 8 divisors (see below), whose sum is σ = 411037255440. Its totient is φ = 389388022560.

The previous prime is 400212420977. The next prime is 400212421043. The reversal of 400212421003 is 300124212004.

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 400212421003 - 2¹⁷ = 400212289931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400212421043) 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, 2756808 + ... + 2898346.

It is an arithmetic number, because the mean of its divisors is an integer number (51379656930).

Almost surely, 2^400212421003 is an apocalyptic number.

400212421003 is a deficient number, since it is larger than the sum of its proper divisors (10824834437).

400212421003 is a wasteful number, since it uses less digits than its factorization.

400212421003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217997.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 400212421003 its reverse (300124212004), we get a palindrome (700336633007).

The spelling of 400212421003 in words is "four hundred billion, two hundred twelve million, four hundred twenty-one thousand, three".