212104202140 has 24 divisors (see below), whose sum is σ = 468861921360. Its totient is φ = 80376329088.

The previous prime is 212104202119. The next prime is 212104202179. The reversal of 212104202140 is 41202401212.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279084097 + ... + 279084856.

It is an arithmetic number, because the mean of its divisors is an integer number (19535913390).

Almost surely, 2^212104202140 is an apocalyptic number.

212104202140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212104202140 is an abundant number, since it is smaller than the sum of its proper divisors (256757719220).

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

212104202140 is a wasteful number, since it uses less digits than its factorization.

212104202140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558168981 (or 558168979 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212104202140 its reverse (41202401212), we get a palindrome (253306603352).

The spelling of 212104202140 in words is "two hundred twelve billion, one hundred four million, two hundred two thousand, one hundred forty".