340221012154 has 4 divisors (see below), whose sum is σ = 510331518234. Its totient is φ = 170110506076.

The previous prime is 340221012139. The next prime is 340221012161. The reversal of 340221012154 is 451210122043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451210122043 = 11213 ⋅40239911.

It can be written as a sum of positive squares in only one way, i.e., 335441363929 + 4779648225 = 579173^2 + 69135^2 .

It is a super-2 number, since 2×340221012154² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85055253037 + ... + 85055253040.

Almost surely, 2^340221012154 is an apocalyptic number.

340221012154 is a deficient number, since it is larger than the sum of its proper divisors (170110506080).

340221012154 is a wasteful number, since it uses less digits than its factorization.

340221012154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170110506079.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 340221012154 its reverse (451210122043), we get a palindrome (791431134197).

The spelling of 340221012154 in words is "three hundred forty billion, two hundred twenty-one million, twelve thousand, one hundred fifty-four".