121122021002220 has 120 divisors (see below), whose sum is σ = 434244875337504. Its totient is φ = 27685033369344.

The previous prime is 121122021002219. The next prime is 121122021002261. The reversal of 121122021002220 is 22200120221121.

It is a happy number.

121122021002220 is a `hidden beast` number, since 1 + 2 + 11 + 220 + 210 + 0 + 2 + 220 = 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 = 121122021002193 and 121122021002202.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5340465777 + ... + 5340488456.

Almost surely, 2^{121122021002220} is an apocalyptic number.

121122021002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122021002220 is an abundant number, since it is smaller than the sum of its proper divisors (313122854335284).

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

121122021002220 is a wasteful number, since it uses less digits than its factorization.

121122021002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680954261 (or 10680954250 counting only the distinct ones).

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

Adding to 121122021002220 its reverse (22200120221121), we get a palindrome (143322141223341).

The spelling of 121122021002220 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, two thousand, two hundred twenty".