121220121101 has 8 divisors (see below), whose sum is σ = 121789242624. Its totient is φ = 120651228000.

The previous prime is 121220121073. The next prime is 121220121149. The reversal of 121220121101 is 101121022121.

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 121220121101 - 2³⁰ = 120146379277 is a prime.

It is a super-2 number, since 2×121220121101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220121151) 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, 1057601 + ... + 1166601.

It is an arithmetic number, because the mean of its divisors is an integer number (15223655328).

Almost surely, 2^121220121101 is an apocalyptic number.

It is an amenable number.

121220121101 is a deficient number, since it is larger than the sum of its proper divisors (569121523).

121220121101 is a wasteful number, since it uses less digits than its factorization.

121220121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114211.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121220121101 its reverse (101121022121), we get a palindrome (222341143222).

The spelling of 121220121101 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred one".