101020200111 has 16 divisors (see below), whose sum is σ = 149711119200. Its totient is φ = 67323596544.

The previous prime is 101020200109. The next prime is 101020200119. The reversal of 101020200111 is 111002020101.

It is a happy number.

It is not a de Polignac number, because 101020200111 - 2¹ = 101020200109 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 = 101020200093 and 101020200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020200119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564546 + ... + 721631.

It is an arithmetic number, because the mean of its divisors is an integer number (9356944950).

Almost surely, 2^101020200111 is an apocalyptic number.

101020200111 is a deficient number, since it is larger than the sum of its proper divisors (48690919089).

101020200111 is a wasteful number, since it uses less digits than its factorization.

101020200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289095 (or 1289089 counting only the distinct ones).

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

Adding to 101020200111 its reverse (111002020101), we get a palindrome (212022220212).

The spelling of 101020200111 in words is "one hundred one billion, twenty million, two hundred thousand, one hundred eleven".