1000121101 has 16 divisors (see below), whose sum is σ = 1249274880. Its totient is φ = 780791040.

The previous prime is 1000121093. The next prime is 1000121113. The reversal of 1000121101 is 1011210001.

It is a cyclic number.

It is not a de Polignac number, because 1000121101 - 2³ = 1000121093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000121141) 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, 131866 + ... + 139243.

It is an arithmetic number, because the mean of its divisors is an integer number (78079680).

Almost surely, 2^1000121101 is an apocalyptic number.

It is an amenable number.

1000121101 is a deficient number, since it is larger than the sum of its proper divisors (249153779).

1000121101 is a wasteful number, since it uses less digits than its factorization.

1000121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271164.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1000121101 is about 31624.6913186516. The cubic root of 1000121101 is about 1000.0403653706.

Adding to 1000121101 its reverse (1011210001), we get a palindrome (2011331102).

Subtracting 1000121101 from its reverse (1011210001), we obtain a square (11088900 = 3330²).

The spelling of 1000121101 in words is "one billion, one hundred twenty-one thousand, one hundred one".