201001010100 has 72 divisors (see below), whose sum is σ = 634432289568. Its totient is φ = 48727516800.

The previous prime is 201001010099. The next prime is 201001010107. The reversal of 201001010100 is 1010100102.

It is a super-2 number, since 2×201001010100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001010107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30451399 + ... + 30457998.

Almost surely, 2^201001010100 is an apocalyptic number.

201001010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001010100 is an abundant number, since it is smaller than the sum of its proper divisors (433431279468).

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

201001010100 is a wasteful number, since it uses less digits than its factorization.

201001010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60909425 (or 60909418 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 201001010100 its reverse (1010100102), we get a palindrome (202011110202).

The spelling of 201001010100 in words is "two hundred one billion, one million, ten thousand, one hundred".