10121000121011 has 4 divisors (see below), whose sum is σ = 10899538591872. Its totient is φ = 9342461650152.

The previous prime is 10121000120963. The next prime is 10121000121061. The reversal of 10121000121011 is 11012100012101.

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 10121000121011 - 2²⁶ = 10120933012147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121000120983 and 10121000121001.

It is not an unprimeable number, because it can be changed into a prime (10121000121061) 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, 389269235411 + ... + 389269235436.

It is an arithmetic number, because the mean of its divisors is an integer number (2724884647968).

Almost surely, 2^{10121000121011} is an apocalyptic number.

10121000121011 is a deficient number, since it is larger than the sum of its proper divisors (778538470861).

10121000121011 is an equidigital number, since it uses as much as digits as its factorization.

10121000121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778538470860.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121000121011 its reverse (11012100012101), we get a palindrome (21133100133112).

The spelling of 10121000121011 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one thousand, eleven".