4020101110121 has 4 divisors (see below), whose sum is σ = 4020354265044. Its totient is φ = 4019847955200.

The previous prime is 4020101110111. The next prime is 4020101110139. The reversal of 4020101110121 is 1210111010204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2328447105625 + 1691654004496 = 1525925^2 + 1300636^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020101110121 - 2¹⁴ = 4020101093737 is a prime.

It is a super-2 number, since 2×4020101110121² (a number of 26 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 = 4020101110096 and 4020101110105.

It is not an unprimeable number, because it can be changed into a prime (4020101110111) 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, 126553640 + ... + 126585401.

It is an arithmetic number, because the mean of its divisors is an integer number (1005088566261).

Almost surely, 2^{4020101110121} is an apocalyptic number.

It is an amenable number.

4020101110121 is a deficient number, since it is larger than the sum of its proper divisors (253154923).

4020101110121 is a wasteful number, since it uses less digits than its factorization.

4020101110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253154922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 4020101110121 its reverse (1210111010204), we get a palindrome (5230212120325).

The spelling of 4020101110121 in words is "four trillion, twenty billion, one hundred one million, one hundred ten thousand, one hundred twenty-one".