121000110220021 has 16 divisors (see below), whose sum is σ = 122012106390720. Its totient is φ = 119993447088000.

The previous prime is 121000110220019. The next prime is 121000110220027. The reversal of 121000110220021 is 120022011000121.

It is a cyclic number.

It is not a de Polignac number, because 121000110220021 - 2¹ = 121000110220019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000110219983 and 121000110220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000110220027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52563831 + ... + 54817483.

It is an arithmetic number, because the mean of its divisors is an integer number (7625756649420).

Almost surely, 2^{121000110220021} is an apocalyptic number.

It is an amenable number.

121000110220021 is a deficient number, since it is larger than the sum of its proper divisors (1011996170699).

121000110220021 is a wasteful number, since it uses less digits than its factorization.

121000110220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254836.

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

Adding to 121000110220021 its reverse (120022011000121), we get a palindrome (241022121220142).

The spelling of 121000110220021 in words is "one hundred twenty-one trillion, one hundred ten million, two hundred twenty thousand, twenty-one".