11021212001011 has 4 divisors (see below), whose sum is σ = 11021237117352. Its totient is φ = 11021186884672.

The previous prime is 11021212000933. The next prime is 11021212001123. The reversal of 11021212001011 is 11010021212011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11021212001011 - 2¹⁵ = 11021211968243 is a prime.

It is a super-2 number, since 2×11021212001011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021212000982 and 11021212001000.

It is not an unprimeable number, because it can be changed into a prime (11021212001311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11888041 + ... + 12781546.

It is an arithmetic number, because the mean of its divisors is an integer number (2755309279338).

Almost surely, 2^{11021212001011} is an apocalyptic number.

11021212001011 is a deficient number, since it is larger than the sum of its proper divisors (25116341).

11021212001011 is an equidigital number, since it uses as much as digits as its factorization.

11021212001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25116340.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11021212001011 its reverse (11010021212011), we get a palindrome (22031233213022).

The spelling of 11021212001011 in words is "eleven trillion, twenty-one billion, two hundred twelve million, one thousand, eleven".