154122221452 has 12 divisors (see below), whose sum is σ = 276292275336. Its totient is φ = 75181571360.

The previous prime is 154122221369. The next prime is 154122221467. The reversal of 154122221452 is 254122221451.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469884658 + ... + 469884985.

It is an arithmetic number, because the mean of its divisors is an integer number (23024356278).

Almost surely, 2^154122221452 is an apocalyptic number.

It is an amenable number.

154122221452 is a deficient number, since it is larger than the sum of its proper divisors (122170053884).

154122221452 is a wasteful number, since it uses less digits than its factorization.

154122221452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939769688 (or 939769686 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

Subtracting 154122221452 from its reverse (254122221451), we obtain a palindrome (99999999999).

The spelling of 154122221452 in words is "one hundred fifty-four billion, one hundred twenty-two million, two hundred twenty-one thousand, four hundred fifty-two".