20120330212311 has 32 divisors (see below), whose sum is σ = 30985143508480. Its totient is φ = 11375307104256.

The previous prime is 20120330212303. The next prime is 20120330212373. The reversal of 20120330212311 is 11321203302102.

It is not a de Polignac number, because 20120330212311 - 2³ = 20120330212303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120330210311) 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, 5123175 + ... + 8153991.

It is an arithmetic number, because the mean of its divisors is an integer number (968285734640).

Almost surely, 2^{20120330212311} is an apocalyptic number.

20120330212311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20120330212311 is a deficient number, since it is larger than the sum of its proper divisors (10864813296169).

20120330212311 is a wasteful number, since it uses less digits than its factorization.

20120330212311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034183.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20120330212311 its reverse (11321203302102), we get a palindrome (31441533514413).

The spelling of 20120330212311 in words is "twenty trillion, one hundred twenty billion, three hundred thirty million, two hundred twelve thousand, three hundred eleven".