1011221210011 has 8 divisors (see below), whose sum is σ = 1015477074864. Its totient is φ = 1006967148000.

The previous prime is 1011221210009. The next prime is 1011221210017. The reversal of 1011221210011 is 1100121221101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011221210011 - 2¹ = 1011221210009 is a prime.

It is a super-2 number, since 2×1011221210011² (a number of 25 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 = 1011221209973 and 1011221210000.

It is not an unprimeable number, because it can be changed into a prime (1011221210017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679405 + ... + 1576081.

It is an arithmetic number, because the mean of its divisors is an integer number (126934634358).

Almost surely, 2^{1011221210011} is an apocalyptic number.

1011221210011 is a deficient number, since it is larger than the sum of its proper divisors (4255864853).

1011221210011 is an equidigital number, since it uses as much as digits as its factorization.

1011221210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901421.

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

Adding to 1011221210011 its reverse (1100121221101), we get a palindrome (2111342431112).

The spelling of 1011221210011 in words is "one trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, eleven".