121000220101021 has 8 divisors (see below), whose sum is σ = 126261814065984. Its totient is φ = 115738685705280.

The previous prime is 121000220101001. The next prime is 121000220101109. The reversal of 121000220101021 is 120101022000121.

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 121000220101021 - 2¹¹ = 121000220098973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000220100992 and 121000220101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000220101001) 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, 10716556 + ... + 18890341.

It is an arithmetic number, because the mean of its divisors is an integer number (15782726758248).

Almost surely, 2^{121000220101021} is an apocalyptic number.

It is an amenable number.

121000220101021 is a deficient number, since it is larger than the sum of its proper divisors (5261593964963).

121000220101021 is a wasteful number, since it uses less digits than its factorization.

121000220101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29784611.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121000220101021 its reverse (120101022000121), we get a palindrome (241101242101142).

The spelling of 121000220101021 in words is "one hundred twenty-one trillion, two hundred twenty million, one hundred one thousand, twenty-one".