121102112001021 has 8 divisors (see below), whose sum is σ = 161469602348160. Its totient is φ = 80734681493952.

The previous prime is 121102112001007. The next prime is 121102112001047. The reversal of 121102112001021 is 120100211201121.

It is a happy number.

121102112001021 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 121102112001021 - 2⁷ = 121102112000893 is a prime.

It is a super-2 number, since 2×121102112001021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102112001001) 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, 10003285 + ... + 18500538.

It is an arithmetic number, because the mean of its divisors is an integer number (20183700293520).

Almost surely, 2^{121102112001021} is an apocalyptic number.

It is an amenable number.

121102112001021 is a deficient number, since it is larger than the sum of its proper divisors (40367490347139).

121102112001021 is a wasteful number, since it uses less digits than its factorization.

121102112001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29920035.

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

Adding to 121102112001021 its reverse (120100211201121), we get a palindrome (241202323202142).

The spelling of 121102112001021 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred twelve million, one thousand, twenty-one".