3401331221421 has 128 divisors (see below), whose sum is σ = 5898493440000. Its totient is φ = 1897002789120.

The previous prime is 3401331221389. The next prime is 3401331221423. The reversal of 3401331221421 is 1241221331043.

3401331221421 is a `hidden beast` number, since 3 + 4 + 0 + 13 + 3 + 1 + 221 + 421 = 666.

It is not a de Polignac number, because 3401331221421 - 2⁵ = 3401331221389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3401331221423) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2037944775 + ... + 2037946443.

It is an arithmetic number, because the mean of its divisors is an integer number (46081980000).

Almost surely, 2^{3401331221421} is an apocalyptic number.

It is an amenable number.

3401331221421 is a deficient number, since it is larger than the sum of its proper divisors (2497162218579).

3401331221421 is a wasteful number, since it uses less digits than its factorization.

3401331221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 3401331221421 its reverse (1241221331043), we get a palindrome (4642552552464).

The spelling of 3401331221421 in words is "three trillion, four hundred one billion, three hundred thirty-one million, two hundred twenty-one thousand, four hundred twenty-one".