213122000004100 has 144 divisors (see below), whose sum is σ = 522084815683200. Its totient is φ = 74802196224000.

The previous prime is 213122000004073. The next prime is 213122000004127. The reversal of 213122000004100 is 1400000221312.

It is an interprime number because it is at equal distance from previous prime (213122000004073) and next prime (213122000004127).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 97135180 + ... + 99305020.

It is an arithmetic number, because the mean of its divisors is an integer number (3625588997800).

Almost surely, 2^{213122000004100} is an apocalyptic number.

213122000004100 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 213122000004100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261042407841600).

213122000004100 is an abundant number, since it is smaller than the sum of its proper divisors (308962815679100).

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

213122000004100 is a wasteful number, since it uses less digits than its factorization.

213122000004100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172974 (or 2172967 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 213122000004100 its reverse (1400000221312), we get a palindrome (214522000225412).

The spelling of 213122000004100 in words is "two hundred thirteen trillion, one hundred twenty-two billion, four thousand, one hundred".