212203231234420 has 24 divisors (see below), whose sum is σ = 445755542393448. Its totient is φ = 84856767388800.

The previous prime is 212203231234283. The next prime is 212203231234433. The reversal of 212203231234420 is 24432132302212.

It can be written as a sum of positive squares in 4 ways, for example, as 48843493171344 + 163359738063076 = 6988812^2 + 12781226^2 .

It is a super-2 number, since 2×212203231234420² (a number of 29 digits) contains 22 as substring.

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, 1532748111 + ... + 1532886550.

It is an arithmetic number, because the mean of its divisors is an integer number (18573147599727).

Almost surely, 2^{212203231234420} is an apocalyptic number.

212203231234420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212203231234420 is an abundant number, since it is smaller than the sum of its proper divisors (233552311159028).

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

212203231234420 is a wasteful number, since it uses less digits than its factorization.

212203231234420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065638131 (or 3065638129 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 212203231234420 its reverse (24432132302212), we get a palindrome (236635363536632).

The spelling of 212203231234420 in words is "two hundred twelve trillion, two hundred three billion, two hundred thirty-one million, two hundred thirty-four thousand, four hundred twenty".