8101213011 has 24 divisors (see below), whose sum is σ = 12023584560. Its totient is φ = 5252406336.

The previous prime is 8101212991. The next prime is 8101213013. The reversal of 8101213011 is 1103121018.

It is a happy number.

It is not a de Polignac number, because 8101213011 - 2⁵ = 8101212979 is a prime.

It is a super-2 number, since 2×8101213011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8101213013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 964516 + ... + 972878.

It is an arithmetic number, because the mean of its divisors is an integer number (500982690).

Almost surely, 2^8101213011 is an apocalyptic number.

8101213011 is a deficient number, since it is larger than the sum of its proper divisors (3922371549).

8101213011 is a wasteful number, since it uses less digits than its factorization.

8101213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315 (or 11312 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 8101213011 is about 90006.7386977220. The cubic root of 8101213011 is about 2008.3990958021.

Adding to 8101213011 its reverse (1103121018), we get a palindrome (9204334029).

The spelling of 8101213011 in words is "eight billion, one hundred one million, two hundred thirteen thousand, eleven".