121201220022120 has 96 divisors (see below), whose sum is σ = 450175960091520. Its totient is φ = 27703136004480.

The previous prime is 121201220022119. The next prime is 121201220022151. The reversal of 121201220022120 is 21220022102121.

It is a happy number.

121201220022120 is a `hidden beast` number, since 1 + 2 + 1 + 201 + 220 + 0 + 221 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121201220022093 and 121201220022102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24047858596 + ... + 24047863635.

It is an arithmetic number, because the mean of its divisors is an integer number (4689332917620).

Almost surely, 2^{121201220022120} is an apocalyptic number.

121201220022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201220022120 is an abundant number, since it is smaller than the sum of its proper divisors (328974740069400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121201220022120 is a wasteful number, since it uses less digits than its factorization.

121201220022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48095722255 (or 48095722248 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121201220022120 its reverse (21220022102121), we get a palindrome (142421242124241).

The spelling of 121201220022120 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred twenty million, twenty-two thousand, one hundred twenty".