20212011499 has 2 divisors, whose sum is σ = 20212011500. Its totient is φ = 20212011498.

The previous prime is 20212011473. The next prime is 20212011509. The reversal of 20212011499 is 99411021202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212011499 - 2¹⁹ = 20211487211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20212011499.

It is not a weakly prime, because it can be changed into another prime (20212011409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106005749 + 10106005750.

It is an arithmetic number, because the mean of its divisors is an integer number (10106005750).

Almost surely, 2^20212011499 is an apocalyptic number.

20212011499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212011499 is an equidigital number, since it uses as much as digits as its factorization.

20212011499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 20212011499 in words is "twenty billion, two hundred twelve million, eleven thousand, four hundred ninety-nine".