101012020011 has 24 divisors (see below), whose sum is σ = 174000003840. Its totient is φ = 55211538096.

The previous prime is 101012020009. The next prime is 101012020051. The reversal of 101012020011 is 110020210101.

It is a happy number.

It is not a de Polignac number, because 101012020011 - 2¹ = 101012020009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101012019975 and 101012020002.

It is not an unprimeable number, because it can be changed into a prime (101012020001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34854321 + ... + 34857218.

It is an arithmetic number, because the mean of its divisors is an integer number (7250000160).

Almost surely, 2^101012020011 is an apocalyptic number.

101012020011 is a deficient number, since it is larger than the sum of its proper divisors (72987983829).

101012020011 is a wasteful number, since it uses less digits than its factorization.

101012020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69711575 (or 69711572 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101012020011 its reverse (110020210101), we get a palindrome (211032230112).

The spelling of 101012020011 in words is "one hundred one billion, twelve million, twenty thousand, eleven".