1001002122 has 24 divisors (see below), whose sum is σ = 2169429600. Its totient is φ = 333576360.

The previous prime is 1001002111. The next prime is 1001002133. The reversal of 1001002122 is 2212001001.

It is an interprime number because it is at equal distance from previous prime (1001002111) and next prime (1001002133).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107097 + ... + 116067.

It is an arithmetic number, because the mean of its divisors is an integer number (90392900).

Almost surely, 2^1001002122 is an apocalyptic number.

1001002122 is an abundant number, since it is smaller than the sum of its proper divisors (1168427478).

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

1001002122 is a wasteful number, since it uses less digits than its factorization.

1001002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15178 (or 15175 counting only the distinct ones).

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

The square root of 1001002122 is about 31638.6175740976. The cubic root of 1001002122 is about 1000.3339291456. Note that the first 3 decimals are identical.

Adding to 1001002122 its reverse (2212001001), we get a palindrome (3213003123).

The spelling of 1001002122 in words is "one billion, one million, two thousand, one hundred twenty-two".