10211221121011 has 2 divisors, whose sum is σ = 10211221121012. Its totient is φ = 10211221121010.

The previous prime is 10211221120949. The next prime is 10211221121033. The reversal of 10211221121011 is 11012112211201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10211221121011 - 2¹¹ = 10211221118963 is a prime.

It is a super-2 number, since 2×10211221121011² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10211221121081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105610560505 + 5105610560506.

It is an arithmetic number, because the mean of its divisors is an integer number (5105610560506).

Almost surely, 2^{10211221121011} is an apocalyptic number.

10211221121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211221121011 is an equidigital number, since it uses as much as digits as its factorization.

10211221121011 is an evil number, because the sum of its binary digits is even.

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

Adding to 10211221121011 its reverse (11012112211201), we get a palindrome (21223333332212).

The spelling of 10211221121011 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".