212110121123100 has 216 divisors, whose sum is σ = 690488341386480. Its totient is φ = 54415617315840.

The previous prime is 212110121123093. The next prime is 212110121123101. The reversal of 212110121123100 is 1321121011212.

It is a happy number.

212110121123100 is a `hidden beast` number, since 2 + 121 + 101 + 211 + 231 + 0 + 0 = 666.

212110121123100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212110121123100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212110121123101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32820982 + ... + 38748381.

Almost surely, 2^{212110121123100} is an apocalyptic number.

212110121123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212110121123100 is an abundant number, since it is smaller than the sum of its proper divisors (478378220263380).

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

212110121123100 is a wasteful number, since it uses less digits than its factorization.

212110121123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71569509 (or 71569499 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 212110121123100 its reverse (1321121011212), we get a palindrome (213431242134312).

The spelling of 212110121123100 in words is "two hundred twelve trillion, one hundred ten billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred".