20351420452212 has 24 divisors (see below), whose sum is σ = 47486887960512. Its totient is φ = 6783772497600.

The previous prime is 20351420452169. The next prime is 20351420452229. The reversal of 20351420452212 is 21225402415302.

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, 1759464 + ... + 6618047.

It is an arithmetic number, because the mean of its divisors is an integer number (1978620331688).

Almost surely, 2^{20351420452212} is an apocalyptic number.

It is an amenable number.

20351420452212 is an abundant number, since it is smaller than the sum of its proper divisors (27135467508300).

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

20351420452212 is a wasteful number, since it uses less digits than its factorization.

20351420452212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579959 (or 8579957 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 20351420452212 its reverse (21225402415302), we get a palindrome (41576822867514).

The spelling of 20351420452212 in words is "twenty trillion, three hundred fifty-one billion, four hundred twenty million, four hundred fifty-two thousand, two hundred twelve".