1011320101 has 4 divisors (see below), whose sum is σ = 1103258304. Its totient is φ = 919381900.

The previous prime is 1011320081. The next prime is 1011320111. The reversal of 1011320101 is 1010231101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011320101 - 2⁵ = 1011320069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011320111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45969085 + ... + 45969106.

It is an arithmetic number, because the mean of its divisors is an integer number (275814576).

Almost surely, 2^1011320101 is an apocalyptic number.

1011320101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011320101 is a deficient number, since it is larger than the sum of its proper divisors (91938203).

1011320101 is an equidigital number, since it uses as much as digits as its factorization.

1011320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91938202.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1011320101 is about 31801.2594247461. The cubic root of 1011320101 is about 1003.7592175752.

Adding to 1011320101 its reverse (1010231101), we get a palindrome (2021551202).

The spelling of 1011320101 in words is "one billion, eleven million, three hundred twenty thousand, one hundred one".