10211211121 has 8 divisors (see below), whose sum is σ = 10291757024. Its totient is φ = 10130883840.

The previous prime is 10211211079. The next prime is 10211211137. The reversal of 10211211121 is 12111211201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10211211121 - 2¹³ = 10211202929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10211211191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39766 + ... + 148336.

It is an arithmetic number, because the mean of its divisors is an integer number (1286469628).

Almost surely, 2^10211211121 is an apocalyptic number.

It is an amenable number.

10211211121 is a deficient number, since it is larger than the sum of its proper divisors (80545903).

10211211121 is a wasteful number, since it uses less digits than its factorization.

10211211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109311.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10211211121 its reverse (12111211201), we get a palindrome (22322422322).

The spelling of 10211211121 in words is "ten billion, two hundred eleven million, two hundred eleven thousand, one hundred twenty-one".