100121202221123 has 32 divisors (see below), whose sum is σ = 103189278386880. Its totient is φ = 97103253012480.

The previous prime is 100121202221099. The next prime is 100121202221129. The reversal of 100121202221123 is 321122202121001.

It is a cyclic number.

It is not a de Polignac number, because 100121202221123 - 2¹⁸ = 100121201958979 is a prime.

It is a super-2 number, since 2×100121202221123² (a number of 29 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 = 100121202221095 and 100121202221104.

It is not an unprimeable number, because it can be changed into a prime (100121202221129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4841206343 + ... + 4841227023.

It is an arithmetic number, because the mean of its divisors is an integer number (3224664949590).

Almost surely, 2^{100121202221123} is an apocalyptic number.

100121202221123 is a deficient number, since it is larger than the sum of its proper divisors (3068076165757).

100121202221123 is a wasteful number, since it uses less digits than its factorization.

100121202221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23687.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 100121202221123 its reverse (321122202121001), we get a palindrome (421243404342124).

The spelling of 100121202221123 in words is "one hundred trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty-three".