121011120100221 has 8 divisors (see below), whose sum is σ = 173759557067040. Its totient is φ = 74468381600112.

The previous prime is 121011120100207. The next prime is 121011120100259. The reversal of 121011120100221 is 122001021110121.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-121011120100221 is a prime.

It is a super-2 number, since 2×121011120100221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121011120100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011120100271) 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, 1551424616631 + ... + 1551424616708.

It is an arithmetic number, because the mean of its divisors is an integer number (21719944633380).

Almost surely, 2^{121011120100221} is an apocalyptic number.

It is an amenable number.

121011120100221 is a deficient number, since it is larger than the sum of its proper divisors (52748436966819).

121011120100221 is a wasteful number, since it uses less digits than its factorization.

121011120100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102849233355.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121011120100221 its reverse (122001021110121), we get a palindrome (243012141210342).

The spelling of 121011120100221 in words is "one hundred twenty-one trillion, eleven billion, one hundred twenty million, one hundred thousand, two hundred twenty-one".