121021101120121 has 4 divisors (see below), whose sum is σ = 121340418010000. Its totient is φ = 120701784230244.

The previous prime is 121021101120113. The next prime is 121021101120149.

121021101120121 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121021101120121 - 2³ = 121021101120113 is a prime.

It is a super-2 number, since 2×121021101120121² (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 = 121021101120095 and 121021101120104.

It is not an unprimeable number, because it can be changed into a prime (121021101100121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159658444371 + ... + 159658445128.

It is an arithmetic number, because the mean of its divisors is an integer number (30335104502500).

Almost surely, 2^{121021101120121} is an apocalyptic number.

It is an amenable number.

121021101120121 is a deficient number, since it is larger than the sum of its proper divisors (319316889879).

121021101120121 is an equidigital number, since it uses as much as digits as its factorization.

121021101120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319316889878.

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

It can be divided in two parts, 12102110 and 1120121, that added together give a palindrome (13222231).

The spelling of 121021101120121 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred one million, one hundred twenty thousand, one hundred twenty-one".