1001120101 has 2 divisors, whose sum is σ = 1001120102. Its totient is φ = 1001120100.

The previous prime is 1001120041. The next prime is 1001120119. The reversal of 1001120101 is 1010211001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623750625 + 377369476 = 24975^2 + 19426^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001120101 - 2⁹ = 1001119589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001120401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500560050 + 500560051.

It is an arithmetic number, because the mean of its divisors is an integer number (500560051).

Almost surely, 2^1001120101 is an apocalyptic number.

It is an amenable number.

1001120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001120101 is an equidigital number, since it uses as much as digits as its factorization.

1001120101 is an evil number, because the sum of its binary digits is even.

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

The square root of 1001120101 is about 31640.4819969608. The cubic root of 1001120101 is about 1000.3732276838.

Adding to 1001120101 its reverse (1010211001), we get a palindrome (2011331102).

The spelling of 1001120101 in words is "one billion, one million, one hundred twenty thousand, one hundred one".