212021013511 has 2 divisors, whose sum is σ = 212021013512. Its totient is φ = 212021013510.

The previous prime is 212021013497. The next prime is 212021013521. The reversal of 212021013511 is 115310120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021013511 - 2¹³ = 212021005319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021013521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010506755 + 106010506756.

It is an arithmetic number, because the mean of its divisors is an integer number (106010506756).

Almost surely, 2^212021013511 is an apocalyptic number.

212021013511 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021013511 is an equidigital number, since it uses as much as digits as its factorization.

212021013511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 212021013511 its reverse (115310120212), we get a palindrome (327331133723).

The spelling of 212021013511 in words is "two hundred twelve billion, twenty-one million, thirteen thousand, five hundred eleven".