1001122002 has 24 divisors (see below), whose sum is σ = 2174266380. Its totient is φ = 332912160.

The previous prime is 1001121991. The next prime is 1001122009. The reversal of 1001122002 is 2002211001.

It can be written as a sum of positive squares in 2 ways, for example, as 968392161 + 32729841 = 31119^2 + 5721^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1001122009) 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, 58477 + ... + 73632.

Almost surely, 2^1001122002 is an apocalyptic number.

1001122002 is an abundant number, since it is smaller than the sum of its proper divisors (1173144378).

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

1001122002 is a wasteful number, since it uses less digits than its factorization.

1001122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132538 (or 132535 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1001122002 is about 31640.5120375761. The cubic root of 1001122002 is about 1000.3738608773.

Adding to 1001122002 its reverse (2002211001), we get a palindrome (3003333003).

It can be divided in two parts, 10011 and 22002, that multiplied together give a palindrome (220262022).

The spelling of 1001122002 in words is "one billion, one million, one hundred twenty-two thousand, two".