201202121100 has 36 divisors (see below), whose sum is σ = 582144804584. Its totient is φ = 53653898880.

The previous prime is 201202121069. The next prime is 201202121101. The reversal of 201202121100 is 1121202102.

201202121100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (201202121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335336569 + ... + 335337168.

Almost surely, 2^201202121100 is an apocalyptic number.

201202121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201202121100 is an abundant number, since it is smaller than the sum of its proper divisors (380942683484).

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

201202121100 is a wasteful number, since it uses less digits than its factorization.

201202121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670673754 (or 670673747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201202121100 its reverse (1121202102), we get a palindrome (202323323202).

The spelling of 201202121100 in words is "two hundred one billion, two hundred two million, one hundred twenty-one thousand, one hundred".