10211220011 has 4 divisors (see below), whose sum is σ = 10212774000. Its totient is φ = 10209666024.

The previous prime is 10211219999. The next prime is 10211220031. The reversal of 10211220011 is 11002211201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11002211201 = 2267 ⋅4853203.

It is a cyclic number.

It is not a de Polignac number, because 10211220011 - 2⁶ = 10211219947 is a prime.

It is a super-2 number, since 2×10211220011² (a number of 21 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 = 10211219974 and 10211220001.

It is not an unprimeable number, because it can be changed into a prime (10211220031) 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, 767096 + ... + 780293.

It is an arithmetic number, because the mean of its divisors is an integer number (2553193500).

Almost surely, 2^10211220011 is an apocalyptic number.

10211220011 is a deficient number, since it is larger than the sum of its proper divisors (1553989).

10211220011 is an equidigital number, since it uses as much as digits as its factorization.

10211220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553988.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10211220011 its reverse (11002211201), we get a palindrome (21213431212).

The spelling of 10211220011 in words is "ten billion, two hundred eleven million, two hundred twenty thousand, eleven".