1001020122 has 24 divisors (see below), whose sum is σ = 2263176864. Its totient is φ = 319165704.

The previous prime is 1001020117. The next prime is 1001020127. The reversal of 1001020122 is 2210201001.

It is an interprime number because it is at equal distance from previous prime (1001020117) and next prime (1001020127).

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 (1001020127) 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, 1208548 + ... + 1209375.

It is an arithmetic number, because the mean of its divisors is an integer number (94299036).

Almost surely, 2^1001020122 is an apocalyptic number.

1001020122 is an abundant number, since it is smaller than the sum of its proper divisors (1262156742).

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

1001020122 is a wasteful number, since it uses less digits than its factorization.

1001020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417954 (or 2417951 counting only the distinct ones).

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

The square root of 1001020122 is about 31638.9020353109. The cubic root of 1001020122 is about 1000.3399251045.

Adding to 1001020122 its reverse (2210201001), we get a palindrome (3211221123).

The spelling of 1001020122 in words is "one billion, one million, twenty thousand, one hundred twenty-two".