101121201123 has 16 divisors (see below), whose sum is σ = 137988264960. Its totient is φ = 65845544544.

The previous prime is 101121201091. The next prime is 101121201187. The reversal of 101121201123 is 321102121101.

It is not a de Polignac number, because 101121201123 - 2⁵ = 101121201091 is a prime.

It is a super-2 number, since 2×101121201123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101121200123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390513 + ... + 1461426.

It is an arithmetic number, because the mean of its divisors is an integer number (8624266560).

Almost surely, 2^101121201123 is an apocalyptic number.

101121201123 is a deficient number, since it is larger than the sum of its proper divisors (36867063837).

101121201123 is a wasteful number, since it uses less digits than its factorization.

101121201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852218.

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

Adding to 101121201123 its reverse (321102121101), we get a palindrome (422223322224).

The spelling of 101121201123 in words is "one hundred one billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-three".