221202211121012 has 576 divisors, whose sum is σ = 487831323033600. Its totient is φ = 86688340992000.

The previous prime is 221202211120909. The next prime is 221202211121071. The reversal of 221202211121012 is 210121112202122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 240698814689 + ... + 240698815607.

Almost surely, 2^{221202211121012} is an apocalyptic number.

221202211121012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221202211121012 is an abundant number, since it is smaller than the sum of its proper divisors (266629111912588).

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

221202211121012 is a wasteful number, since it uses less digits than its factorization.

221202211121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221202211121012 its reverse (210121112202122), we get a palindrome (431323323323134).

The spelling of 221202211121012 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred twenty-one thousand, twelve".