121220222020002 has 48 divisors (see below), whose sum is σ = 300248181784512. Its totient is φ = 34624677322080.

The previous prime is 121220222019977. The next prime is 121220222020063. The reversal of 121220222020002 is 200020222022121.

121220222020002 is a `hidden beast` number, since 1 + 21 + 220 + 2 + 220 + 200 + 0 + 2 = 666.

It is a super-2 number, since 2×121220222020002² (a number of 29 digits) contains 22 as substring.

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

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, 133877928 + ... + 134780339.

It is an arithmetic number, because the mean of its divisors is an integer number (6255170453844).

Almost surely, 2^{121220222020002} is an apocalyptic number.

121220222020002 is an abundant number, since it is smaller than the sum of its proper divisors (179027959764510).

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

121220222020002 is a wasteful number, since it uses less digits than its factorization.

121220222020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268661863 (or 268661860 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 121220222020002 its reverse (200020222022121), we get a palindrome (321240444042123).

It can be divided in two parts, 121220 and 222020002, that added together give a palindrome (222141222).

The spelling of 121220222020002 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, twenty thousand, two".