202100011212 has 96 divisors (see below), whose sum is σ = 516489329664. Its totient is φ = 60998414400.

The previous prime is 202100011199. The next prime is 202100011213. The reversal of 202100011212 is 212110001202.

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 (202100011213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71085463 + ... + 71088305.

It is an arithmetic number, because the mean of its divisors is an integer number (5380097184).

Almost surely, 2^202100011212 is an apocalyptic number.

202100011212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202100011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258244664832).

202100011212 is an abundant number, since it is smaller than the sum of its proper divisors (314389318452).

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

202100011212 is a wasteful number, since it uses less digits than its factorization.

202100011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819 (or 4817 counting only the distinct ones).

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

Adding to 202100011212 its reverse (212110001202), we get a palindrome (414210012414).

The spelling of 202100011212 in words is "two hundred two billion, one hundred million, eleven thousand, two hundred twelve".