201202100001 has 12 divisors (see below), whose sum is σ = 332143149312. Its totient is φ = 114972628536.

The previous prime is 201202099949. The next prime is 201202100003. The reversal of 201202100001 is 100001202102.

It is not a de Polignac number, because 201202100001 - 2¹⁹ = 201201575713 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (201202100003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1596842001 + ... + 1596842126.

It is an arithmetic number, because the mean of its divisors is an integer number (27678595776).

Almost surely, 2^201202100001 is an apocalyptic number.

201202100001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201202100001 is a deficient number, since it is larger than the sum of its proper divisors (130941049311).

201202100001 is a wasteful number, since it uses less digits than its factorization.

201202100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193684140 (or 3193684137 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201202100001 its reverse (100001202102), we get a palindrome (301203302103).

The spelling of 201202100001 in words is "two hundred one billion, two hundred two million, one hundred thousand, one".