10121001011021 has 16 divisors (see below), whose sum is σ = 10539571281408. Its totient is φ = 9711942979200.

The previous prime is 10121001010997. The next prime is 10121001011047. The reversal of 10121001011021 is 12011010012101.

It is a cyclic number.

It is not a de Polignac number, because 10121001011021 - 2⁶ = 10121001010957 is a prime.

It is a super-2 number, since 2×10121001011021² (a number of 27 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 = 10121001010993 and 10121001011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121001011621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4783880 + ... + 6567153.

It is an arithmetic number, because the mean of its divisors is an integer number (658723205088).

Almost surely, 2^{10121001011021} is an apocalyptic number.

It is an amenable number.

10121001011021 is a deficient number, since it is larger than the sum of its proper divisors (418570270387).

10121001011021 is a wasteful number, since it uses less digits than its factorization.

10121001011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351452.

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

Adding to 10121001011021 its reverse (12011010012101), we get a palindrome (22132011023122).

The spelling of 10121001011021 in words is "ten trillion, one hundred twenty-one billion, one million, eleven thousand, twenty-one".