201021477011 has 2 divisors, whose sum is σ = 201021477012. Its totient is φ = 201021477010.

The previous prime is 201021476993. The next prime is 201021477029. The reversal of 201021477011 is 110774120102.

It is a balanced prime because it is at equal distance from previous prime (201021476993) and next prime (201021477029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201021477011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (201021177011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510738505 + 100510738506.

It is an arithmetic number, because the mean of its divisors is an integer number (100510738506).

Almost surely, 2^201021477011 is an apocalyptic number.

201021477011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021477011 is an equidigital number, since it uses as much as digits as its factorization.

201021477011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 201021477011 its reverse (110774120102), we get a palindrome (311795597113).

The spelling of 201021477011 in words is "two hundred one billion, twenty-one million, four hundred seventy-seven thousand, eleven".