1009201281 has 16 divisors (see below), whose sum is σ = 1469752320. Its totient is φ = 610877520.

The previous prime is 1009201261. The next prime is 1009201301. The reversal of 1009201281 is 1821029001.

It is an interprime number because it is at equal distance from previous prime (1009201261) and next prime (1009201301).

It is not a de Polignac number, because 1009201281 - 2⁶ = 1009201217 is a prime.

It is a super-2 number, since 2×1009201281² = 2036974451144081922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1009201261) 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, 8580 + ... + 45738.

It is an arithmetic number, because the mean of its divisors is an integer number (91859520).

Almost surely, 2^1009201281 is an apocalyptic number.

1009201281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1009201281 is a deficient number, since it is larger than the sum of its proper divisors (460551039).

1009201281 is a wasteful number, since it uses less digits than its factorization.

1009201281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37996.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 1009201281 is about 31767.9284971494. The cubic root of 1009201281 is about 1003.0577343973.

It can be divided in two parts, 100920 and 1281, that added together give a palindrome (102201).

The spelling of 1009201281 in words is "one billion, nine million, two hundred one thousand, two hundred eighty-one".