201200111020 has 12 divisors (see below), whose sum is σ = 422520233184. Its totient is φ = 80480044400.

The previous prime is 201200111017. The next prime is 201200111131. The reversal of 201200111020 is 20111002102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201200110988 and 201200111006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030002756 + ... + 5030002795.

It is an arithmetic number, because the mean of its divisors is an integer number (35210019432).

Almost surely, 2^201200111020 is an apocalyptic number.

201200111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201200111020 is an abundant number, since it is smaller than the sum of its proper divisors (221320122164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201200111020 is a wasteful number, since it uses less digits than its factorization.

201200111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060005560 (or 10060005558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201200111020 its reverse (20111002102), we get a palindrome (221311113122).

The spelling of 201200111020 in words is "two hundred one billion, two hundred million, one hundred eleven thousand, twenty".