20112111001213 has 8 divisors (see below), whose sum is σ = 25074839689920. Its totient is φ = 15671774806080.

The previous prime is 20112111001207. The next prime is 20112111001247. The reversal of 20112111001213 is 31210011121102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112111001213 - 2¹⁷ = 20112110870141 is a prime.

It is a super-2 number, since 2×20112111001213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112111002213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130598123308 + ... + 130598123461.

It is an arithmetic number, because the mean of its divisors is an integer number (3134354961240).

Almost surely, 2^{20112111001213} is an apocalyptic number.

It is an amenable number.

20112111001213 is a deficient number, since it is larger than the sum of its proper divisors (4962728688707).

20112111001213 is a wasteful number, since it uses less digits than its factorization.

20112111001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261196246787.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 20112111001213 its reverse (31210011121102), we get a palindrome (51322122122315).

The spelling of 20112111001213 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, one thousand, two hundred thirteen".