121101131221 has 8 divisors (see below), whose sum is σ = 138467246400. Its totient is φ = 103751504448.

The previous prime is 121101131197. The next prime is 121101131227. The reversal of 121101131221 is 122131101121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121101131221 - 2¹³ = 121101123029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121101131195 and 121101131204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101131227) 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, 4106356 + ... + 4135741.

It is an arithmetic number, because the mean of its divisors is an integer number (17308405800).

Almost surely, 2^121101131221 is an apocalyptic number.

It is an amenable number.

121101131221 is a deficient number, since it is larger than the sum of its proper divisors (17366115179).

121101131221 is an equidigital number, since it uses as much as digits as its factorization.

121101131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244203.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121101131221 its reverse (122131101121), we get a palindrome (243232232342).

The spelling of 121101131221 in words is "one hundred twenty-one billion, one hundred one million, one hundred thirty-one thousand, two hundred twenty-one".