10211121123 has 24 divisors (see below), whose sum is σ = 15873834240. Its totient is φ = 5821598160.

The previous prime is 10211121023. The next prime is 10211121133. The reversal of 10211121123 is 32112111201.

It is not a de Polignac number, because 10211121123 - 2¹² = 10211117027 is a prime.

It is a super-2 number, since 2×10211121123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10211121133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14583 + ... + 143648.

It is an arithmetic number, because the mean of its divisors is an integer number (661409760).

Almost surely, 2^10211121123 is an apocalyptic number.

10211121123 is a deficient number, since it is larger than the sum of its proper divisors (5662713117).

10211121123 is a wasteful number, since it uses less digits than its factorization.

10211121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158687 (or 158680 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 10211121123 its reverse (32112111201), we get a palindrome (42323232324).

The spelling of 10211121123 in words is "ten billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-three".