3220421400366 has 16 divisors (see below), whose sum is σ = 6444144127488. Its totient is φ = 1072923579000.

The previous prime is 3220421400307. The next prime is 3220421400367. The reversal of 3220421400366 is 6630041240223.

It is a super-2 number, since 2×3220421400366² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220421400367) 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, 137542600 + ... + 137566011.

It is an arithmetic number, because the mean of its divisors is an integer number (402759007968).

Almost surely, 2^{3220421400366} is an apocalyptic number.

3220421400366 is an abundant number, since it is smaller than the sum of its proper divisors (3223722727122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3220421400366 is a wasteful number, since it uses less digits than its factorization.

3220421400366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275110567.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 3220421400366 its reverse (6630041240223), we get a palindrome (9850462640589).

The spelling of 3220421400366 in words is "three trillion, two hundred twenty billion, four hundred twenty-one million, four hundred thousand, three hundred sixty-six".