101012001011 has 4 divisors (see below), whose sum is σ = 101245285512. Its totient is φ = 100778716512.

The previous prime is 101012001007. The next prime is 101012001037. The reversal of 101012001011 is 110100210101.

It is a happy number.

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 101012001011 - 2² = 101012001007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101012001011.

It is not an unprimeable number, because it can be changed into a prime (101012001091) 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, 116641601 + ... + 116642466.

It is an arithmetic number, because the mean of its divisors is an integer number (25311321378).

Almost surely, 2^101012001011 is an apocalyptic number.

101012001011 is a deficient number, since it is larger than the sum of its proper divisors (233284501).

101012001011 is an equidigital number, since it uses as much as digits as its factorization.

101012001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233284500.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 101012001011 its reverse (110100210101), we get a palindrome (211112211112).

The spelling of 101012001011 in words is "one hundred one billion, twelve million, one thousand, eleven".