120101022121221 has 12 divisors (see below), whose sum is σ = 173479349815980. Its totient is φ = 80067303938880.

The previous prime is 120101022121219. The next prime is 120101022121231. The reversal of 120101022121221 is 122121220101021.

120101022121221 is a `hidden beast` number, since 1 + 201 + 0 + 1 + 0 + 221 + 21 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34399456661025 + 85701565460196 = 5865105^2 + 9257514^2 .

It is not a de Polignac number, because 120101022121221 - 2¹ = 120101022121219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120101022121194 and 120101022121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101022121231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27161631 + ... + 31272291.

It is an arithmetic number, because the mean of its divisors is an integer number (14456612484665).

Almost surely, 2^{120101022121221} is an apocalyptic number.

It is an amenable number.

120101022121221 is a deficient number, since it is larger than the sum of its proper divisors (53378327694759).

120101022121221 is a wasteful number, since it uses less digits than its factorization.

120101022121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7356996 (or 7356993 counting only the distinct ones).

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

Adding to 120101022121221 its reverse (122121220101021), we get a palindrome (242222242222242).

The spelling of 120101022121221 in words is "one hundred twenty trillion, one hundred one billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".