221202112002020 has 48 divisors (see below), whose sum is σ = 467609550240000. Its totient is φ = 87893225884800.

The previous prime is 221202112001987. The next prime is 221202112002023. The reversal of 221202112002020 is 20200211202122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221202112002020.

It is not an unprimeable number, because it can be changed into a prime (221202112002023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166643906 + ... + 167966054.

It is an arithmetic number, because the mean of its divisors is an integer number (9741865630000).

Almost surely, 2^{221202112002020} is an apocalyptic number.

221202112002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221202112002020 is an abundant number, since it is smaller than the sum of its proper divisors (246407438237980).

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

221202112002020 is a wasteful number, since it uses less digits than its factorization.

221202112002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377708 (or 1377706 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221202112002020 its reverse (20200211202122), we get a palindrome (241402323204142).

The spelling of 221202112002020 in words is "two hundred twenty-one trillion, two hundred two billion, one hundred twelve million, two thousand, twenty".