101201020011 has 72 divisors (see below), whose sum is σ = 188075391504. Its totient is φ = 51937925760.

The previous prime is 101201019979. The next prime is 101201020061. The reversal of 101201020011 is 110020102101.

It is a happy number.

It is not a de Polignac number, because 101201020011 - 2⁵ = 101201019979 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 = 101201019975 and 101201020002.

It is not an unprimeable number, because it can be changed into a prime (101201020061) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26425 + ... + 450666.

Almost surely, 2^101201020011 is an apocalyptic number.

101201020011 is a deficient number, since it is larger than the sum of its proper divisors (86874371493).

101201020011 is a wasteful number, since it uses less digits than its factorization.

101201020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477161 (or 477151 counting only the distinct ones).

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

Adding to 101201020011 its reverse (110020102101), we get a palindrome (211221122112).

The spelling of 101201020011 in words is "one hundred one billion, two hundred one million, twenty thousand, eleven".