101121312011 has 4 divisors (see below), whose sum is σ = 101129131752. Its totient is φ = 101113492272.

The previous prime is 101121311987. The next prime is 101121312043. The reversal of 101121312011 is 110213121101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110213121101 = 31 ⋅3555261971.

It is a cyclic number.

It is not a de Polignac number, because 101121312011 - 2²² = 101117117707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101121312511) 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, 3890441 + ... + 3916346.

It is an arithmetic number, because the mean of its divisors is an integer number (25282282938).

Almost surely, 2^101121312011 is an apocalyptic number.

101121312011 is a deficient number, since it is larger than the sum of its proper divisors (7819741).

101121312011 is an equidigital number, since it uses as much as digits as its factorization.

101121312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819740.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 101121312011 its reverse (110213121101), we get a palindrome (211334433112).

The spelling of 101121312011 in words is "one hundred one billion, one hundred twenty-one million, three hundred twelve thousand, eleven".