101820101011 has 4 divisors (see below), whose sum is σ = 102869792872. Its totient is φ = 100770409152.

The previous prime is 101820100979. The next prime is 101820101021. The reversal of 101820101011 is 110101028101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101820101011 - 2⁵ = 101820100979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101820101021) 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, 524845785 + ... + 524845978.

It is an arithmetic number, because the mean of its divisors is an integer number (25717448218).

Almost surely, 2^101820101011 is an apocalyptic number.

101820101011 is a deficient number, since it is larger than the sum of its proper divisors (1049691861).

101820101011 is an equidigital number, since it uses as much as digits as its factorization.

101820101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049691860.

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

Adding to 101820101011 its reverse (110101028101), we get a palindrome (211921129112).

The spelling of 101820101011 in words is "one hundred one billion, eight hundred twenty million, one hundred one thousand, eleven".