20012020020111 has 48 divisors (see below), whose sum is σ = 31800800199168. Its totient is φ = 11154878179200.

The previous prime is 20012020020107. The next prime is 20012020020197. The reversal of 20012020020111 is 11102002021002.

It is not a de Polignac number, because 20012020020111 - 2² = 20012020020107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012020020911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41121396 + ... + 41605206.

It is an arithmetic number, because the mean of its divisors is an integer number (662516670816).

Almost surely, 2^{20012020020111} is an apocalyptic number.

20012020020111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20012020020111 is a deficient number, since it is larger than the sum of its proper divisors (11788780179057).

20012020020111 is a wasteful number, since it uses less digits than its factorization.

20012020020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490732 (or 490725 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20012020020111 its reverse (11102002021002), we get a palindrome (31114022041113).

The spelling of 20012020020111 in words is "twenty trillion, twelve billion, twenty million, twenty thousand, one hundred eleven".