131212213000420 has 48 divisors (see below), whose sum is σ = 285049526408640. Its totient is φ = 50674651784064.

The previous prime is 131212213000357. The next prime is 131212213000423. The reversal of 131212213000420 is 24000312212131.

It is a junction number, because it is equal to n+sod(n) for n = 131212213000391 and 131212213000400.

It is not an unprimeable number, because it can be changed into a prime (131212213000423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76516447 + ... + 78212473.

It is an arithmetic number, because the mean of its divisors is an integer number (5938531800180).

Almost surely, 2^{131212213000420} is an apocalyptic number.

131212213000420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212213000420 is an abundant number, since it is smaller than the sum of its proper divisors (153837313408220).

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

131212213000420 is a wasteful number, since it uses less digits than its factorization.

131212213000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829452 (or 1829450 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 131212213000420 its reverse (24000312212131), we get a palindrome (155212525212551).

The spelling of 131212213000420 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirteen million, four hundred twenty", and thus it is an aban number.