3402130221555 has 128 divisors (see below), whose sum is σ = 6449558169600. Its totient is φ = 1515254501376.

The previous prime is 3402130221547. The next prime is 3402130221557. The reversal of 3402130221555 is 5551220312043.

It is not a de Polignac number, because 3402130221555 - 2³ = 3402130221547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3402130221557) 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, 52204231 + ... + 52269359.

It is an arithmetic number, because the mean of its divisors is an integer number (50387173200).

Almost surely, 2^{3402130221555} is an apocalyptic number.

3402130221555 is a deficient number, since it is larger than the sum of its proper divisors (3047427948045).

3402130221555 is a wasteful number, since it uses less digits than its factorization.

3402130221555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65805.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 3402130221555 its reverse (5551220312043), we get a palindrome (8953350533598).

The spelling of 3402130221555 in words is "three trillion, four hundred two billion, one hundred thirty million, two hundred twenty-one thousand, five hundred fifty-five".