121020010212121 has 4 divisors (see below), whose sum is σ = 121295682217600. Its totient is φ = 120744338206644.

The previous prime is 121020010212107. The next prime is 121020010212161. The reversal of 121020010212121 is 121212010020121.

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 121020010212121 - 2¹⁷ = 121020010081049 is a prime.

It is a super-2 number, since 2×121020010212121² (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 = 121020010212095 and 121020010212104.

It is not an unprimeable number, because it can be changed into a prime (121020010212161) 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, 137836002081 + ... + 137836002958.

It is an arithmetic number, because the mean of its divisors is an integer number (30323920554400).

Almost surely, 2^{121020010212121} is an apocalyptic number.

It is an amenable number.

121020010212121 is a deficient number, since it is larger than the sum of its proper divisors (275672005479).

121020010212121 is an equidigital number, since it uses as much as digits as its factorization.

121020010212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275672005478.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121020010212121 its reverse (121212010020121), we get a palindrome (242232020232242).

The spelling of 121020010212121 in words is "one hundred twenty-one trillion, twenty billion, ten million, two hundred twelve thousand, one hundred twenty-one".