20120401320212 has 48 divisors (see below), whose sum is σ = 38294612072640. Its totient is φ = 9211300342272.

The previous prime is 20120401320211. The next prime is 20120401320329. The reversal of 20120401320212 is 21202310402102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120401320211) 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, 18603239 + ... + 19655057.

It is an arithmetic number, because the mean of its divisors is an integer number (797804418180).

Almost surely, 2^{20120401320212} is an apocalyptic number.

It is an amenable number.

20120401320212 is a deficient number, since it is larger than the sum of its proper divisors (18174210752428).

20120401320212 is a wasteful number, since it uses less digits than its factorization.

20120401320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059480 (or 1059478 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20120401320212 its reverse (21202310402102), we get a palindrome (41322711722314).

The spelling of 20120401320212 in words is "twenty trillion, one hundred twenty billion, four hundred one million, three hundred twenty thousand, two hundred twelve".