100121201101223 has 32 divisors (see below), whose sum is σ = 109856256998400. Its totient is φ = 90824824548864.

The previous prime is 100121201101211. The next prime is 100121201101237. The reversal of 100121201101223 is 322101102121001.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100121201101223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121201101123) 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, 689757188 + ... + 689902326.

It is an arithmetic number, because the mean of its divisors is an integer number (3433008031200).

Almost surely, 2^{100121201101223} is an apocalyptic number.

100121201101223 is a deficient number, since it is larger than the sum of its proper divisors (9735055897177).

100121201101223 is a wasteful number, since it uses less digits than its factorization.

100121201101223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147599.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 100121201101223 its reverse (322101102121001), we get a palindrome (422222303222224).

The spelling of 100121201101223 in words is "one hundred trillion, one hundred twenty-one billion, two hundred one million, one hundred one thousand, two hundred twenty-three".