354143522121 has 16 divisors (see below), whose sum is σ = 483914366208. Its totient is φ = 230239088000.

The previous prime is 354143522107. The next prime is 354143522123. The reversal of 354143522121 is 121225341453.

It is a cyclic number.

It is not a de Polignac number, because 354143522121 - 2³¹ = 351996038473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (354143522123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323166 + ... + 901511.

It is an arithmetic number, because the mean of its divisors is an integer number (30244647888).

Almost surely, 2^354143522121 is an apocalyptic number.

It is an amenable number.

354143522121 is a deficient number, since it is larger than the sum of its proper divisors (129770844087).

354143522121 is a wasteful number, since it uses less digits than its factorization.

354143522121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227072.

The product of its digits is 28800, while the sum is 33.

Adding to 354143522121 its reverse (121225341453), we get a palindrome (475368863574).

The spelling of 354143522121 in words is "three hundred fifty-four billion, one hundred forty-three million, five hundred twenty-two thousand, one hundred twenty-one".