20212011427 has 2 divisors, whose sum is σ = 20212011428. Its totient is φ = 20212011426.

The previous prime is 20212011409. The next prime is 20212011473. The reversal of 20212011427 is 72411021202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212011427 - 2⁷ = 20212011299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212011398 and 20212011407.

It is not a weakly prime, because it can be changed into another prime (20212015427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106005713 + 10106005714.

It is an arithmetic number, because the mean of its divisors is an integer number (10106005714).

Almost surely, 2^20212011427 is an apocalyptic number.

20212011427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212011427 is an equidigital number, since it uses as much as digits as its factorization.

20212011427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 20212011427 its reverse (72411021202), we get a palindrome (92623032629).

The spelling of 20212011427 in words is "twenty billion, two hundred twelve million, eleven thousand, four hundred twenty-seven".