212203202211220 has 96 divisors (see below), whose sum is σ = 490197564364032. Its totient is φ = 77158244240000.

The previous prime is 212203202211179. The next prime is 212203202211263. The reversal of 212203202211220 is 22112202302212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212203202211191 and 212203202211200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318601545 + ... + 319266895.

It is an arithmetic number, because the mean of its divisors is an integer number (5106224628792).

Almost surely, 2^{212203202211220} is an apocalyptic number.

212203202211220 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 212203202211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245098782182016).

212203202211220 is an abundant number, since it is smaller than the sum of its proper divisors (277994362152812).

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

212203202211220 is a wasteful number, since it uses less digits than its factorization.

212203202211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677374 (or 677350 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 212203202211220 its reverse (22112202302212), we get a palindrome (234315404513432).

The spelling of 212203202211220 in words is "two hundred twelve trillion, two hundred three billion, two hundred two million, two hundred eleven thousand, two hundred twenty".