249250202122 has 4 divisors (see below), whose sum is σ = 373875303186. Its totient is φ = 124625101060.

The previous prime is 249250202101. The next prime is 249250202137. The reversal of 249250202122 is 221202052942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214229196801 + 35021005321 = 462849^2 + 187139^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62312550529 + ... + 62312550532.

Almost surely, 2^249250202122 is an apocalyptic number.

249250202122 is a deficient number, since it is larger than the sum of its proper divisors (124625101064).

249250202122 is a wasteful number, since it uses less digits than its factorization.

249250202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124625101063.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 249250202122 in words is "two hundred forty-nine billion, two hundred fifty million, two hundred two thousand, one hundred twenty-two".