21131414461212 has 96 divisors (see below), whose sum is σ = 55042286745600. Its totient is φ = 6254277247680.

The previous prime is 21131414461189. The next prime is 21131414461219. The reversal of 21131414461212 is 21216441413112.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131414461219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164897539 + ... + 165025637.

It is an arithmetic number, because the mean of its divisors is an integer number (573357153600).

Almost surely, 2^{21131414461212} is an apocalyptic number.

21131414461212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21131414461212 is an abundant number, since it is smaller than the sum of its proper divisors (33910872284388).

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

21131414461212 is a wasteful number, since it uses less digits than its factorization.

21131414461212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157223 (or 157221 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

Adding to 21131414461212 its reverse (21216441413112), we get a palindrome (42347855874324).

The spelling of 21131414461212 in words is "twenty-one trillion, one hundred thirty-one billion, four hundred fourteen million, four hundred sixty-one thousand, two hundred twelve".