202220121121020 has 72 divisors (see below), whose sum is σ = 613439589920976. Its totient is φ = 53921976106752.

The previous prime is 202220121120991. The next prime is 202220121121033. The reversal of 202220121121020 is 20121121022202.

It is a happy number.

202220121121020 is a `hidden beast` number, since 2 + 0 + 2 + 220 + 1 + 211 + 210 + 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 = 202220121120984 and 202220121121002.

It is a congruent number.

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, 32435262 + ... + 38163941.

It is an arithmetic number, because the mean of its divisors is an integer number (8519994304458).

Almost surely, 2^{202220121121020} is an apocalyptic number.

202220121121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202220121121020 is an abundant number, since it is smaller than the sum of its proper divisors (411219468799956).

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

202220121121020 is a wasteful number, since it uses less digits than its factorization.

202220121121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70615131 (or 70615126 counting only the distinct ones).

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

Adding to 202220121121020 its reverse (20121121022202), we get a palindrome (222341242143222).

The spelling of 202220121121020 in words is "two hundred two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty".