20152212154 has 32 divisors (see below), whose sum is σ = 31443811200. Its totient is φ = 9680798400.

The previous prime is 20152212149. The next prime is 20152212161. The reversal of 20152212154 is 45121225102.

It is a super-2 number, since 2×20152212154² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112389 + ... + 1130359.

It is an arithmetic number, because the mean of its divisors is an integer number (982619100).

Almost surely, 2^20152212154 is an apocalyptic number.

20152212154 is a deficient number, since it is larger than the sum of its proper divisors (11291599046).

20152212154 is a wasteful number, since it uses less digits than its factorization.

20152212154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18246.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 20152212154 its reverse (45121225102), we get a palindrome (65273437256).

The spelling of 20152212154 in words is "twenty billion, one hundred fifty-two million, two hundred twelve thousand, one hundred fifty-four".