212203013100 has 144 divisors (see below), whose sum is σ = 661433165568. Its totient is φ = 52216392960.

The previous prime is 212203013093. The next prime is 212203013119. The reversal of 212203013100 is 1310302212.

It is a super-2 number, since 2×212203013100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212203013100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13747587 + ... + 13763013.

It is an arithmetic number, because the mean of its divisors is an integer number (4593285872).

Almost surely, 2^212203013100 is an apocalyptic number.

212203013100 is a gapful number since it is divisible by the number (20) 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 212203013100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330716582784).

212203013100 is an abundant number, since it is smaller than the sum of its proper divisors (449230152468).

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

212203013100 is a wasteful number, since it uses less digits than its factorization.

212203013100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18984 (or 18977 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 212203013100 its reverse (1310302212), we get a palindrome (213513315312).

The spelling of 212203013100 in words is "two hundred twelve billion, two hundred three million, thirteen thousand, one hundred".