1501122222 has 24 divisors (see below), whose sum is σ = 3253166280. Its totient is φ = 500261040.

The previous prime is 1501122199. The next prime is 1501122223. The reversal of 1501122222 is 2222211051.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1501122195 and 1501122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501122223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122097 + ... + 133827.

It is an arithmetic number, because the mean of its divisors is an integer number (135548595).

Almost surely, 2^1501122222 is an apocalyptic number.

1501122222 is an abundant number, since it is smaller than the sum of its proper divisors (1752044058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1501122222 is a wasteful number, since it uses less digits than its factorization.

1501122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18848 (or 18845 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1501122222 is about 38744.3185770508. The cubic root of 1501122222 is about 1144.9996432815. Note that the first 3 decimals are identical.

Adding to 1501122222 its reverse (2222211051), we get a palindrome (3723333273).

The spelling of 1501122222 in words is "one billion, five hundred one million, one hundred twenty-two thousand, two hundred twenty-two".