10211121013 has 4 divisors (see below), whose sum is σ = 10213144480. Its totient is φ = 10209097548.

The previous prime is 10211121001. The next prime is 10211121023. The reversal of 10211121013 is 31012111201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10211121013 - 2¹⁷ = 10210989941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211120984 and 10211121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211121023) 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, 1004145 + ... + 1014262.

It is an arithmetic number, because the mean of its divisors is an integer number (2553286120).

Almost surely, 2^10211121013 is an apocalyptic number.

It is an amenable number.

10211121013 is a deficient number, since it is larger than the sum of its proper divisors (2023467).

10211121013 is an equidigital number, since it uses as much as digits as its factorization.

10211121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023466.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10211121013 its reverse (31012111201), we get a palindrome (41223232214).

The spelling of 10211121013 in words is "ten billion, two hundred eleven million, one hundred twenty-one thousand, thirteen".