1001122401 has 16 divisors (see below), whose sum is σ = 1458943488. Its totient is φ = 607891200.

The previous prime is 1001122399. The next prime is 1001122411. The reversal of 1001122401 is 1042211001.

It is a happy number.

It is not a de Polignac number, because 1001122401 - 2¹ = 1001122399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001122411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315030 + ... + 318191.

It is an arithmetic number, because the mean of its divisors is an integer number (91183968).

Almost surely, 2^1001122401 is an apocalyptic number.

It is an amenable number.

1001122401 is a deficient number, since it is larger than the sum of its proper divisors (457821087).

1001122401 is a wasteful number, since it uses less digits than its factorization.

1001122401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633272.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1001122401 is about 31640.5183427832. The cubic root of 1001122401 is about 1000.3739937779.

Adding to 1001122401 its reverse (1042211001), we get a palindrome (2043333402).

The spelling of 1001122401 in words is "one billion, one million, one hundred twenty-two thousand, four hundred one".