120121110222021 has 32 divisors (see below), whose sum is σ = 184209448550400. Its totient is φ = 77281619825520.

The previous prime is 120121110221971. The next prime is 120121110222037. The reversal of 120121110222021 is 120222011121021.

120121110222021 is a `hidden beast` number, since 1 + 201 + 211 + 10 + 2 + 220 + 21 = 666.

It is not a de Polignac number, because 120121110222021 - 2¹⁰ = 120121110220997 is a prime.

It is a super-2 number, since 2×120121110222021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120121110221985 and 120121110222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121110222041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199579561 + ... + 200180526.

It is an arithmetic number, because the mean of its divisors is an integer number (5756545267200).

Almost surely, 2^{120121110222021} is an apocalyptic number.

It is an amenable number.

120121110222021 is a deficient number, since it is larger than the sum of its proper divisors (64088338328379).

120121110222021 is a wasteful number, since it uses less digits than its factorization.

120121110222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399760486 (or 399760480 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120121110222021 its reverse (120222011121021), we get a palindrome (240343121343042).

The spelling of 120121110222021 in words is "one hundred twenty trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, twenty-one".