21140401232212 has 24 divisors (see below), whose sum is σ = 37025779804160. Its totient is φ = 10561607521920.

The previous prime is 21140401232207. The next prime is 21140401232213. The reversal of 21140401232212 is 21223210404112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140401232213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322618012 + ... + 322683532.

Almost surely, 2^{21140401232212} is an apocalyptic number.

It is an amenable number.

21140401232212 is a deficient number, since it is larger than the sum of its proper divisors (15885378571948).

21140401232212 is a wasteful number, since it uses less digits than its factorization.

21140401232212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129871 (or 129869 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21140401232212 its reverse (21223210404112), we get a palindrome (42363611636324).

The spelling of 21140401232212 in words is "twenty-one trillion, one hundred forty billion, four hundred one million, two hundred thirty-two thousand, two hundred twelve".