20353531251212 has 6 divisors (see below), whose sum is σ = 35618679689628. Its totient is φ = 10176765625604.

The previous prime is 20353531251181. The next prime is 20353531251217. The reversal of 20353531251212 is 21215213535302.

It is not an unprimeable number, because it can be changed into a prime (20353531251217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2544191406398 + ... + 2544191406405.

It is an arithmetic number, because the mean of its divisors is an integer number (5936446614938).

Almost surely, 2^{20353531251212} is an apocalyptic number.

It is an amenable number.

20353531251212 is a deficient number, since it is larger than the sum of its proper divisors (15265148438416).

20353531251212 is a wasteful number, since it uses less digits than its factorization.

20353531251212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088382812807 (or 5088382812805 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 20353531251212 its reverse (21215213535302), we get a palindrome (41568744786514).

The spelling of 20353531251212 in words is "twenty trillion, three hundred fifty-three billion, five hundred thirty-one million, two hundred fifty-one thousand, two hundred twelve".