1522222000 has 160 divisors (see below), whose sum is σ = 4003743744. Its totient is φ = 556416000.

The previous prime is 1522221989. The next prime is 1522222019. The reversal of 1522222000 is 2222251.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3301770 + ... + 3302230.

Almost surely, 2^1522222000 is an apocalyptic number.

1522222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1522222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2001871872).

1522222000 is an abundant number, since it is smaller than the sum of its proper divisors (2481521744).

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

1522222000 is a wasteful number, since it uses less digits than its factorization.

1522222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1522222000 is about 39015.6635212065. The cubic root of 1522222000 is about 1150.3394083246.

Adding to 1522222000 its reverse (2222251), we get a palindrome (1524444251).

The spelling of 1522222000 in words is "one billion, five hundred twenty-two million, two hundred twenty-two thousand".