20412111211 has 16 divisors (see below), whose sum is σ = 21322461888. Its totient is φ = 19525248000.

The previous prime is 20412111173. The next prime is 20412111221. The reversal of 20412111211 is 11211121402.

It is a cyclic number.

It is not a de Polignac number, because 20412111211 - 2¹⁵ = 20412078443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412111221) 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, 402595 + ... + 450451.

It is an arithmetic number, because the mean of its divisors is an integer number (1332653868).

Almost surely, 2^20412111211 is an apocalyptic number.

20412111211 is a deficient number, since it is larger than the sum of its proper divisors (910350677).

20412111211 is a wasteful number, since it uses less digits than its factorization.

20412111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48102.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20412111211 its reverse (11211121402), we get a palindrome (31623232613).

The spelling of 20412111211 in words is "twenty billion, four hundred twelve million, one hundred eleven thousand, two hundred eleven".