121021101210121 has 8 divisors (see below), whose sum is σ = 138310061131584. Its totient is φ = 103732199082960.

The previous prime is 121021101210101. The next prime is 121021101210157. The reversal of 121021101210121 is 121012101120121.

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

It is not a de Polignac number, because 121021101210121 - 2¹⁷ = 121021101079049 is a prime.

It is a super-2 number, since 2×121021101210121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121021101210095 and 121021101210104.

It is not an unprimeable number, because it can be changed into a prime (121021101210101) 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, 9864475 + ... + 18421456.

It is an arithmetic number, because the mean of its divisors is an integer number (17288757641448).

Almost surely, 2^{121021101210121} is an apocalyptic number.

It is an amenable number.

121021101210121 is a deficient number, since it is larger than the sum of its proper divisors (17288959921463).

121021101210121 is an equidigital number, since it uses as much as digits as its factorization.

121021101210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28897151.

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

Adding to 121021101210121 its reverse (121012101120121), we get a palindrome (242033202330242).

The spelling of 121021101210121 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".